Selecting Words - Verbal and Reasoning

Q1:

Once you suspect a person of double dealing, you ought to keep him at arm's ......

A distance

B length

C aim

D width

ANS:B - length

The Answer is Length.

'At Arm's Length' means to keep someone or something at arm's length is to maintain an emotional distance as to avoid familiarity or intimacy or else to dissociate yourself from someone or something and to avoid coming into close contact.