Socialist (Noun) : a country governed by a party that believes that everyone has an
equal right to a share of a country’s wealth and that the government should own and control the main industries
capitalist (Noun) : an investor of capital in business, especially one having a major financial
interest in an important enterprise
revisionist (Noun) : a person who wants to change a political system, especially Marxism,
because he does not agree with its main ideas or practices
populist (Noun) : a person who believes in or supports a type of politics that claims to represent the opinions and wishes of ordinary people
Sovereign (Adj.) : a country free to govern itself
Democratic (Adj.) : a country controlled by representatives who are elected by the people
of a country
Republic (Noun) : a country that is governed by a President and politicians elected by the
people
Here, socialist is the right usage.

Correct Option: D

Socialist (Noun) : a country governed by a party that believes that everyone has an
equal right to a share of a country’s wealth and that the government should own and control the main industries
capitalist (Noun) : an investor of capital in business, especially one having a major financial
interest in an important enterprise
revisionist (Noun) : a person who wants to change a political system, especially Marxism,
because he does not agree with its main ideas or practices
populist (Noun) : a person who believes in or supports a type of politics that claims to represent the opinions and wishes of ordinary people
Sovereign (Adj.) : a country free to govern itself
Democratic (Adj.) : a country controlled by representatives who are elected by the people
of a country
Republic (Noun) : a country that is governed by a President and politicians elected by the
people
Here, socialist is the right usage.

remarkable (Adj.) : unusual or surprising in a way that causes people to take notice ;
astonishing
exposition (Noun) : a full explanation of a theory, plan, etc.
brevity (Noun) : the quality of using a few words while speaking or writing
clarity (Noun) : the quality of being expressed clearly
conspicuous (Adj.) : easy to see or notice
incomprehensible (Adj.) : impossible to understand
Here, remarkable is the right usage.

Correct Option: D

remarkable (Adj.) : unusual or surprising in a way that causes people to take notice ;
astonishing
exposition (Noun) : a full explanation of a theory, plan, etc.
brevity (Noun) : the quality of using a few words while speaking or writing
clarity (Noun) : the quality of being expressed clearly
conspicuous (Adj.) : easy to see or notice
incomprehensible (Adj.) : impossible to understand
Here, remarkable is the right usage.

stethoscope (Noun) : an instrument used by a doctor for listening to somebody's heart and breathing
horoscope (Noun) : a forecast of a person’s future, based on the relative portion of the stars
and planets.
microscope (Noun) : an optical instrument used for viewing very small objects.
telescope (Noun) : an optical instrument designed to make distant objects appear nearer.
Here, stethoscope is the right usage.

Correct Option: D

stethoscope (Noun) : an instrument used by a doctor for listening to somebody's heart and breathing
horoscope (Noun) : a forecast of a person’s future, based on the relative portion of the stars
and planets.
microscope (Noun) : an optical instrument used for viewing very small objects.
telescope (Noun) : an optical instrument designed to make distant objects appear nearer.
Here, stethoscope is the right usage.

sung is the right usage.

Correct Option: B

sung is the right usage.

couple with (Phr. V.) : to link one thing, situation, etc. to another
Here, coupled is the right usage.

Correct Option: D

couple with (Phr. V.) : to link one thing, situation, etc. to another
Here, coupled is the right usage.