Correct option is B
Explanation:
The phrase
"to chase out" is incorrect in this context. The correct verb should be
"chase" (without "out") as
"chase" already means to drive away.
Correct Sentence:
It is his job
to chase clients with outstanding debts.
Grammar Rule:
· Some verbs do not need additional prepositions or adverbs.
· He asked for help. → He asked help.