decided
v.v. to make a choice after thinking about several possibilities. You use this when you pick one option and stop wondering what to do.
v. to make a firm choice or come to a conclusion after deliberation. Transitive when followed by a direct object or a 'that' clause; intransitive when the choice is implied.
I decided to stay home tonight.
After looking at several different models, the family finally decided on a blue car that fit their budget.
The committee decided that the project required further funding, though they acknowledged that the timeline for completion would remain unchanged despite the extra resources.
Often followed by an infinitive ('to do') or the preposition 'on' when choosing between specific items.
I decided for the red oneI decided on the red oneWhen choosing between specific options, use the preposition 'on' rather than 'for'.