Does "upon her return" means what happened the day she returned or what happened after she reaturned.

Ikeep getting differentand provide an explanation! even if it's a minor read the sample student claim."i strongly feel that advertising should be banned during children's television shows." is this an effective claim? a. yes, because it offers an opinion that everyone believes to be true.b. yes, because it expresses an indisputable statement of fact.c. no, because it does not offer an opinion that can be argued against. d. no, because it only expresses a personal preference or feeling.