Find out whether there is any grammatical error in below sentence. In the absence of / clear instuctions / one cannot be expected / to be functioned effectively.

The correct answer is: C. one cannot be expected

The sentence is grammatically correct, but it is awkward and unclear. The word “functioned” is a past participle, and it is not clear what the subject of the sentence is. The sentence could be improved by adding a subject and a verb. For example:

• In the absence of clear instructions, one cannot be expected to function effectively.
• In the absence of clear instructions, the team cannot be expected to function effectively.
• In the absence of clear instructions, the machine cannot be expected to function effectively.

The sentence could also be improved by changing the verb “functioned” to a more active verb. For example:

• In the absence of clear instructions, one cannot be expected to perform effectively.
• In the absence of clear instructions, the team cannot be expected to perform effectively.
• In the absence of clear instructions, the machine cannot be expected to perform effectively.