Lais's introverted personality made it difficult for her to make friends, since she was uncomfortable talking to strangers.

What does the word that contains the stem probably mean?
Responses

looking into one's self
looking into one's self

to dip into a container of water or liquid
to dip into a container of water or liquid

staying into yourself, not outgoing
staying into yourself, not outgoing

to go into a room or structure
to go into a room or structure

staying into yourself, not outgoing