Similes- a figure of speech involving the comparison of one thing with another thing of a different kind, used to make a description more emphatic or vivid
Example- She was as sly as a fox.
Metaphor- a figure of speech in which a word or phrase is applied to an object or action to which it is not literally applicable.
Example-Laughter is the best medicine.
B, boosted the morale of the patriots.
The answer is letter C
Explanation: Contract bondage is an employee who, within a service system, is bound by contract to work for a particular employer for a fixed period of time. The employer often allows assigning the work of a contract to a third party.