Explanation:

- Option 4: "the myth" - Correct Answer

- Emily Dickinson was often referred to as "the myth" by the people of her town, Amherst, Massachusetts. This nickname arose due to her reclusive nature and the aura of mystery surrounding her life.

- Option 1: Amherst

- This option is incorrect. Amherst is the name of the town where Emily Dickinson lived. It is not a nickname given to her by the townsfolk.

- Option 2: Enigma

- While Dickinson was indeed enigmatic, "Enigma" itself is not recorded as a specific nickname she was called by the townsfolk.

- Option 3: Reclusive

- This option is incorrect as a nickname. Though it describes her lifestyle accurately, it was not a specific moniker she was known by in Amherst.