What is related to 'Courage' in the same way as 'Kindness' is related to…

This is an antonym-pair analogy: the second word in the given pair is the opposite of the first, so the missing word must be the opposite of the target word.

'Kindness' and 'Cruelty' are opposite personality traits: a kind disposition versus a cruel one. Applying the same antonym relationship to 'Courage', the missing word must name the disposition of someone who lacks courage.

• Bravery: means the same as courage (a synonym), so it cannot supply the required opposite.

• Valour: also means the same as courage (a synonym), so it fails the relationship for the same reason.

• Fear: names a passing emotion that even courageous people can feel in danger, not the stable character trait of lacking courage.

'Cowardice' is the disposition-word that stands in direct opposition to courage, completing the analogy the same way 'Cruelty' opposes 'Kindness'.