Answer: D.It's personification; Running makes the speaker feel extremely happy.
Personification refers to a rhetorical device in which animals and inanimate objects are given human qualities. In this case, the speaker claims that his legs laugh. This is an example of the legs being personified. The meaning that the author tries to convey with this figurative language is that running makes him feel extremely happy.
Answer:
I acted very unintelligently.
Explanation:
You could replace dumb with a more profounded way.