Idioms and Phrases - Verbal and Reasoning

In the following questions four alternatives are given for the idiom/phraseitalicised and underlinedin the sentence. Choose the alternative which best expresses the meaning of idiom/phrase.
Q1:

The robber took to his heels when the police arrived.

A opened fire

B hid himself

C ran off

D surrendered

ANS:C - ran off

No answer description is available.