Questions

‘Nominal’ is most appropriate word.

Smallest particles of matter are known as quarks and leptons that seem to be the fundamental building blocks. This is too small to measure but bigger than 0. This is ofen consider as fundamental building blocks and something even smaller.

Documents from Western India –Rajasthan, Gujarat and Maharashtra –record petitions sent bywomen to the village panchayat, seeking redress and justice. Wives protested against the infidelity of their husbands or the neglect of the wife and children by the male head of the household, the grihasthi. While male infidelity was not always punished, the state and “superior” caste groups did intervene when it came to ensuring that the family was adequately provided for. In most cases when women petitioned to the panchayat, their names were excluded from the record: the petitioner was referred to as themother, sister or wife of the male head of the household.

National Deworming Day is observed in our country India to reduce the cases of worm infections among kids, on 10th February every year. It was observed for the first time in 2015.

The meanings of the given words are as follows:
Tremulous: shaking or quivering slightly 

Stringent: (of regulations, requirements, or conditions) strict, precise, and exacting

Garrulous: excessively talkative, especially on trivial matters
Quivery: shaking or trembling slightly
Steady: firmly fixed, supported, or balanced; not shaking or moving
Conjunctive: relating to or forming a connection or combination of things
Desist: stop doing something; cease or abstain

Abstain: restrain oneself from doing or enjoying something
Defer: put off (an action or event) to a later time; postpone
Terse: sparing in the use of words; abrupt
Abrupt: sudden and unexpected
Therefore, it can be observed that option B i.e. ‘quivery, steady’ forms a synonym-antonym pair of ‘tremulous’.