Fill in the blank with the suitable pronoun:
_______ student must contribute generously to the project. Since the money is donated to charity.
Each, each of, either and neither are distributive pronouns. ‘Each’ and ‘Each of’ are used to present the members of a group as individuals. Whereas ‘either’ and ‘neither’ are used when there is a comparison or choice between two things. Since the given sentence is speaking about a group of students amidst which every individual has to contribute, ‘either’ and ‘neither’ cannot be used. Thus options C and D are incorrect. On the other hand, ‘each’ is used for singular nouns like “each candidate” while ‘each of’ is used for plural nouns, such as “each of the kids”. Since the noun ‘student’ is in singular ‘each’ is the suitable answer. Thus option A is correct, while option B is incorrect.