Answer
$(a)$
Work Step by Step
Let us solve the given problem in the following way:
$(t+1)(t-4)=0$
This can be written as : $t+1=0$ or, $t-4=0$
Thus, $t=-1,4$
Hence, the final answer will be $(a)$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.