Read the excerpt from "The Revolt of Mother.”The old man slapped the saddle upon the mare's back."Look here, father, I want to know what them men are diggin' over in the field for, an' I'm goin' to know.”"I wish you'd go into the house, mother, an' 'tend to your own affairs,” the old man said then . . .”

In this context, “tend to” means to attend to or take care of something. The old man is telling Mother to go into the house and take care of her own affairs. So “take care of” is the best choice; “sit quietly” and “be satisfied” do not match the phrase’s meaning.

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