Select the option that will improve the highlighted part of the given sentence. In case no improvement is needed, select 'No improvement required'.
Major hubs of the information technology industry is the Silicon Valley of Central California.

Correct option is B

The correct substitution of the highlighted part is (b) A major hub of.
Explanation:
· The original sentence is incorrect because "Major hubs... is" does not maintain subject-verb agreement.
· "Hubs" is plural, but "is" is a singular verb.
· However, the Silicon Valley is a single entity, so "A major hub of" should be used instead of "Major hubs of".
Grammatical rule used:
· Singular subjects take singular verbs, and plural subjects take plural verbs.
· Example:
· Incorrect: Cities is the backbone of the economy.
· Correct: A city is the backbone of the economy.
Thus, the correct sentence is: "A major hub of the information technology industry is the Silicon Valley of Central California."