Answer:
D. require and demand
Explanation:
The above are the closest synonyms.
Require means something specified as necessary. Demand simply refers to a request which is seen as a necessary right. From their definitions one can affirm that the two words are actually close synonyms.
A look at the other options, one will discover that they are not actually close synonyms except option D. The words in option D are synonymous as their both meanings talk about something necessary.
