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

A person who believes that war and violence are unjustifiable

pacifist

The correct option is pacifist. It means "a person who believes that war and violence are unjustifiable." The other options are incorrect.

• Pessimist means "a person who tends to see the worst side of things or believe that things will go wrong."
• Optimist means "a person who tends to see the best side of things or believe that things will turn out well."
• Anarchist means "a person who believes in or supports the overthrow of all government and the establishment of a society based on voluntary cooperation."