Match the lack of subject-verb agreement solution to the correct

lack of subject-verb agreement problem: An indefinite pronoun as the
subject
Solutions:
a. Make the verb agree with the subject that is closer to it.
b. Determine whether the indefinite pronoun is singular or plural
and make the verb agree.
c. If the parts of the compound subject do not belong to one unit
or they refer to different people or things, use a plural
verb, or if the parts of the compound subject belong to one
unit or if both parts refer to the same person or thing, use a
singular verb.
d. Use a singular verb when many a, each, or every precedes a
compound subject.
e. Ignore an intervening expression between a subject and its
verb. Make the verb agree with the subject.

1. An indefinite pronoun as the subject

Solution: b. Determine whether the indefinite pronoun is singular or plural and make the verb agree.