6492. His craven behaviour makes him an object of mockery

✅ The correct answer is option B.
Silly : having or showing a lack of common sense or judgement; absurd and foolish.

Cowardly : lacking courage.

Indecent : not conforming with generally accepted standards of behaviour, especially in relation to sexual matters.

Mean : intend to convey or refer to (a particular thing); signify.

Craven : contemptibly lacking in courage; cowardly.

Synonym of Craven is Cowardly