Have a screw loose

Choose an option, which can be substituted for a given word/sentence/phrase out of given options.

An optical lens made for improving vision in a single eye

A government in which all the powers are concentrated on the hands of officers?

Candour

A. The bold realist whose candour , even temerity, was legendary turned out to have been hiding a secret.

In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase.

Select the option that can be used as a one-word substitute for the given group of words.

Anything that leads to death

a statement based on something one has seen, heard, or noticed

In the following question, out of the given alternatives, choose the best one which expresses the meaning of the given word.

Prodigy