The correct answer is A. Given the boot—A shoemaker would work on boots
Explanation:
A pun refers to a humoristic, concise phrase or sentence that is created based on a word that has multiple meanings, words that sound similar or words that are closely related to others. In the case of the sentence "The shoemaker's assistant was given the boot when he was discovered stealing leather" the use of the word "boot" creates a pun because in this case the word "boot" means being fired but it is also a type of shoes which is ironic because the shoemaker's assistant probably worked with boots. This implies, the sentence that explains this pun is "Given the boot—A shoemaker would work on boots".
