The preposition ‘of’ is used in the sentence “Keep clear of wicked boys”. The preposition of is used to express a relationship of separation or association between two entities. It is used to express the relationship between an object, a person, and a quality.

Preposition of:
The preposition of is used to express a relationship of separation or association between two entities. It is used to express the relationship between an object, a person, and a quality. In the sentence, “Keep clear of wicked boys”, the preposition of is used to express a relationship of separation between the subject ‘you’ and the object ‘wicked boys’. It implies that the speaker wants the subject to stay away from the wicked boys.

Usage of the Preposition of:
•The preposition of is used to denote possession or ownership. For example, “A book of mine”.
•It is also used to indicate the material of which something is made. For example, “A cup of glass”.
•The preposition of is also used to denote origin or source. For example, “He is a man of India”.
•It is also used to indicate the cause or purpose of an action. For example, “He died of cancer”.
•It is also used to denote separation or association. For example, “Keep clear of wicked boys”.

Therefore, in the sentence “Keep clear of wicked boys”, the preposition of is used to express a relationship of separation between the subject ‘you’ and the object ‘wicked boys’. It implies that the speaker wants the subject to stay away from the wicked boys. Hence, option A is the correct answer.

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