Answer:
The correct option is 3) Indulged
That is, they indulged her.
Explanation:
Indulge here means to allow someone enjoy a pleasure, or desire that you normally won't allow.
In sentence two, Miss Catherine was the one showing better behaviour and affection. In the third sentence, it states that they were attentive to her comfort. This means that they made sure she was comfortable around them. In other words, she went out of their way to make her feel comfortable.
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