Correct option is C
The correct answer is
(c) foiled; alerted.
·
Foiled means to prevent or thwart something.
·
Alerted means to warn someone of danger or an emergency.
Why the other options are incorrect:
·
Prevented; complained: Incorrect. "Complained" does not fit the context of warning the police.
·
Checked; signalled: Incorrect. "Checked" is vague, and "signalled" is too weak to describe warning the police.
·
Averted; brought: Incorrect. "Brought" does not fit logically in this context.
Correct Sentence:
The attempt to robbery was
foiled
because the woman in the house called up police and
alerted
them.