As, 5 X 20 = 100, 4 X 16 = 64
Similarly, 4 X 20 = 80 and 3 X 16 = 48
&there4: ? = 48

Both the words are synonyms of each other.

Both the words are synonyms of each other.

'Omniscient' is an adjective used for someone who has the ' Knowledge' of all things. Similarly, ' Boundless' is an adjective used for ' Expanse'

A nebulous from means having an ambiguous from same as an insipid taste which is dull, boring, almost no taste.

Country and capital pair.

A Citizen must be patriotic to his Country. Similarly, a Student should concentrate on Studies.

Both the words are opposite in meaning

Both the words are opposite in meaning

'Asinine' means 'foolish' ; or like a donkey, similarly 'Vulpine' means 'Cunning' or resembling a 'fox' . 'Avian' means 'of or pertaining to birds' in general, and not specifically doves. Hence, the correct answer is option (a).