Based on the following sentence, which answer both names the error present and corrects the error?

Janice studies hard for weeks before any exam and took her test on the first day she can.

$5/$v agreement $($Janice study hard for weeks before any exam and took her test on the first day she can.$)$

irregular verb form $($Janice studies hard for weeks before any exam and taken her test on the first day she can. $)$

inconsistent verb tense $($ Janice studies hard for weeks before any exam and takes her test on the first day she can.$)$