<span>The correct option is option “C”. “I do not mind fishing, as
long as I don’t have to bait the hook” is the sentence in which the clause is
used as an adverb. The options “A” and “D” cannot be the right answer since in
both the cases the clause is modifying the subject and thus makes it an
adjective. So these two options are obviously ruled out. In case of option “B”
the clause is acting as a noun and so this option also gets cancelled out. </span>
