Question

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Answer 1

You have three correct options.

Juanita se acuesta a las diez anoche. indicative present tense.

Juanita se acostó a las diez anoche. perfect preterite used for recent past times like yesterday or last week or last month.

Juanita se acostaba a las diez anoche. imperfect preterite used for remote past times like years ago.

Se acostió is wrong spanish, is not correct.

Answer 2

which would be the best choice

Answer 3

The three options are ok, but generally you speak in present tense. If you need only one choose indicative present tense.

Answer 4

ok thank yoi

Answer 5

De nada @mia99