Identify the complete adjective clause.

This is the opportunity for which I have been waiting all my life.

a. This is the opportunity

b. the opportunity for which

c. the opportunity for which I have been waiting all my life.

d. for which I have been waiting all my life.

e. I have been waiting all my life.

d. for which I have been waiting all my life. This is the correct option.

The adjective clause is giving information about opportunity. We can rewrite the sentence like this : This is the opportunity. I have been waiting for this opportunity all my life. These two independent sentences can be linked into a simple sentence : This is the opportunity for which (the relative word and the preposition have to be placed at the beginning of the adjective clause. Which stands for opportunity and for links the verb To wait and opportunity.) I have been waiting all my life.).

These options are not right:

a. This is the opportunity. (This is the sentence without the adjective clause).

b. the opportunity for which (This is incomplete. It has elements from the sentence and from the adjective clause).

c. the opportunity for which I have been waiting all my life. (The adjective clause does not include the opportunity).

e. I have been waiting all my life. (This is part of the adjective clause but it is incomplete).

The right answer is:

d. for which I have been waiting all my life.

Explanation:

Most adjective clauses begin with a trigger word called a relative pronoun. In this case, it is "which" and there are other four, who, whom, whose and that.