According to question , we know that
A ‘stallion’ is a male horse while a mare is a female horse. Therefore, the relationship is Male /Female.

Correct Option: B

According to question , we know that
A ‘stallion’ is a male horse while a mare is a female horse. Therefore, the relationship is Male /Female.:
In options 1, 3 and 4 this relationship has been inverted. In option 2, ram, a male sheep, precedes ewe, a female sheep. Thus, the Male : Female relationship is analogous to the given words.

As we know that ,
Actor and thespian are synonyms.

Correct Option: C

As we know that ,
Actor and thespian are synonyms. Likewise, Harlequin and comedian mean ‘anusung, comic characters.

According to question , we know that
Venom and Toxin are synonyms, meaning a poisonous liquid.

Correct Option: B

According to question , we know that
Venom and Toxin are synonyms, meaning a poisonous liquid. Maleficence is synonym of venial, meaning ‘not very serious and therefore able to be forgiven’.

title of a person - where he performs

Correct Option: D

Actor performs on the stage.
Skater performs on the rink.

As we know that ,
'Indefatigable' means incapable of being fatigued. Tireless is the correct synonym.

Correct Option: C

As we know that ,
'Indefatigable' means incapable of being fatigued. Tireless is the correct synonym. Inveterate means to be confirmed in a habit. Habitual is the correct synonym.
Therefore , INDEFATIGABLE : INVETERATE :: TIRELESS : HABITUAL is required answer .