What is the antecedent for the pronoun shown in bold in this sentence?

marietta’s sister asked if she could borrow the new red sweater that their mother had bought for marietta’s birthday.

a.
marietta

b.
sister

c.
sweater

d.
mother

the bottom of the ocean

in 1636, roger williams settled at the tip of narragansett bay after being banished from the massachusetts bay colony for his religious views, on land granted to him by the narragansett tribe. he called the site "providence plantation" and declared it a place of religious freedom.

explanation:

its c i just did it on apex

o'henry used irony in "the gift of the magi". this tool was essential to developing the story's theme by showing that the couple bought gifts for each other that they could not actually use at the moment. in addition, the author used this fact to show that people of the society should treasure the things they've received from others, because you may never know if they sacrificed their most treasured possession to aquire the gift.