Question

In the following sentence, fill in the blank with a verb in agreement with its subject.
The cost of all these articles _______ risen.
a) have
b) has
c) has been
d) are

Answer 1

Hint: A verb is a content word that denotes an action, occurrence, or state of existence. A verb is the word class that serves as the predicate of a sentence.

Complete answer:
In the given question, we have to find out which of the options includes a verb used for the third person singular (as ‘cost’ is singular, and in the third person).
Let us thus analyze the options given to us in this question -
Option (a.), 'have', refers to a verb used for the third person plural.
Therefore, option (a.) is incorrect as we need a verb used for the third person singular.
Option (b.), ‘has', refers to a verb used for a third person singular. Therefore, option (b.) is correct.
Option (c.), ‘has been', refers to ‘has been risen’ in the sentence. Therefore, option (c.) is incorrect as ‘been risen’ is grammatically incorrect.
Option (d.), ‘are', refers to a verb used when two or more things or people are connected by ‘and’. Therefore, option (d.) is incorrect as we need a verb used for the third person singular.

Note:
In this question, it will be helpful for the student to recall the concept of the person. The person is a grammatical category used in the classification of pronouns, possessive determiners, and verb forms according to whether they indicate the speaker, the addressee, or a third party.