The answer is b. adjective clauses have to have words such as (which, whom, whose, that) at the beginning of the sentence. Those words stand as the subject. It also has to have a verb which is the word "felt"
The complete adjective clause in the sentence is B. 'when I felt worst,' as it includes a subject and a verb, providing essential information about the noun 'time.' This clause modifies the noun by describing a specific moment of feeling bad. Other options either do not qualify as adjectives clauses or include additional details about the nouns but are not the clauses themselves.
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