wise (Adjective) : able to make sensible decisions and give good advice.
prudent (Adjective) : sensible and careful when you make judgements and decisions; discretionary; wise
cunning (Adjective) : crafty; wily; clever and skilful
frank (Adjective) : honest and direct in what you say
severe (Adjective) : extremely bad or serious; stern; stiff; harsh

Correct Option: A

wise (Adjective) : able to make sensible decisions and give good advice.
prudent (Adjective) : sensible and careful when you make judgements and decisions; discretionary; wise
cunning (Adjective) : crafty; wily; clever and skilful
frank (Adjective) : honest and direct in what you say
severe (Adjective) : extremely bad or serious; stern; stiff; harsh

exchange (Verb) : to give something to somebody and at the same time receive the same type of thing from him
swap (Verb) : to give something to somebody and receive something in exchange
snap (Verb) : to break; to move; speak something in an angry voice
break (Verb) : to be damaged and separated into two or more parts
exclude (Verb) : to not include something deliberately in what you are doing or considering

Correct Option: B

exchange (Verb) : to give something to somebody and at the same time receive the same type of thing from him
swap (Verb) : to give something to somebody and receive something in exchange
snap (Verb) : to break; to move; speak something in an angry voice
break (Verb) : to be damaged and separated into two or more parts
exclude (Verb) : to not include something deliberately in what you are doing or considering

respect (Noun) : a feeling of admiration for somebody or something because of his/its good qualities or achievements
regard (Noun) : thought and care for somebody or something; respect; esteem
liking (Noun) : a feeling of pleasure and enjoyment
love (Noun) : a strong feeling of deep affection for somebody or something
suspicion (Noun) : a feeling that somebody has done something wrong or illegal, even though you have no proof

Correct Option: A

respect (Noun) : a feeling of admiration for somebody or something because of his/its good qualities or achievements
regard (Noun) : thought and care for somebody or something; respect; esteem
liking (Noun) : a feeling of pleasure and enjoyment
love (Noun) : a strong feeling of deep affection for somebody or something
suspicion (Noun) : a feeling that somebody has done something wrong or illegal, even though you have no proof

intentionally (Adverb) : done deliberately; intended
deliberately (Adverb) : done in a way that was planned; not by chance; intentionally, on purpose
spontaneously (Adverb) : unplanned but done suddenly
inadvertently (Adverb) : unintentionally; by accident; without intending to
naturally (Adverb) : in a way that you would expect

Correct Option: C

intentionally (Adverb) : done deliberately; intended
deliberately (Adverb) : done in a way that was planned; not by chance; intentionally, on purpose
spontaneously (Adverb) : unplanned but done suddenly
inadvertently (Adverb) : unintentionally; by accident; without intending to
naturally (Adverb) : in a way that you would expect

inflexible (Adjective) : rigid; unable to change or make suitable for a particular situation
stringent (Adjective) : very strict and that must be obeyed
flexible (Adjective) : able to change to suit new conditions or situations
staunch (Adjective) : faithful, strong and loyal in your opinions and attitude
tough (Adjective) : difficult; strict; firm; strong

Correct Option: D

inflexible (Adjective) : rigid; unable to change or make suitable for a particular situation
stringent (Adjective) : very strict and that must be obeyed
flexible (Adjective) : able to change to suit new conditions or situations
staunch (Adjective) : faithful, strong and loyal in your opinions and attitude
tough (Adjective) : difficult; strict; firm; strong