Identify the error in the verb form in the following sentence and choose the correct sentence from the given options (Present Tense).
The committee work diligently to ensure fair and unbiased decision.

To identify the error in the given sentence and choose the correct sentence, let's analyze the sentence structure and subject-verb agreement in the present tense.

The original sentence is:
"The committee work diligently to ensure fair and unbiased decision."

Let's break down the components of the sentence:
1. Subject: "The committee"
"Committee" is a collective noun. In American English and standard formal English contexts, collective nouns that act as a single unified unit are treated as singular nouns.
2. Verb: "work"
"Work" is the plural form of the verb.

Since the subject "The committee" is singular, it requires a singular verb form in the simple present tense to maintain subject-verb agreement. The singular form of the verb "work" in the present tense is "works" (achieved by adding "-s" to the base verb).

Let's evaluate the given options:
- "The committee is work..." is grammatically incorrect because "is" (auxiliary verb) cannot be directly followed by the base form "work".
- "The committee works..." correctly uses the singular present tense verb "works" to agree with the singular collective noun subject "The committee".
- "The committee has work..." is grammatically incorrect because the auxiliary verb "has" requires the past participle form "worked" (or "has to work").
- "The committee worked..." uses the past tense "worked", but the question specifically asks for the Present Tense.

Therefore, the correct sentence in the present tense is: "The committee works diligently to ensure fair and unbiased decision."