Question

Which phrase provides the best context clue for the meaning of the word laborious?

Olivia's climb to the top of the mountain was slow and laborious. It required a lot of time and a tremendous effort, but she did it.​

Answer 1

A tremendous effort

Step-by-step explanation:

The mountain was slow and laborious. It required a lot of time and a tremendous effort. Slow goes with a lot of time and laborious goes with a tremendous effort. If that makes sense