Answer:
Ms. Sullivan
Explanation:
Ms. Sullivan gave Helen a doll to play with. Ms. Sullivan really wanted Helen to learn to spell the word "doll," so she sought a way to get the girl's attention to learn how to spell. For that reason, Ms. Sullivan began spelling d-o-l-l in her hand until it attracted the attention and curiosity of the girl who began to mimic Ms. Sullivan's movements with her finger and began to learn to spell.
