Donald plans to paint a realistic close-up of a cat. He wants to make the composition very precise and show fine details, such as the cat’s whiskers. Which type of paint should he use? A. acrylic
B. watercolor
C. oil
D. tempera

Tempera

Explanation:

I think that would be best for lines and precise details as others may be a little less precise and a hint is tempera doesn't darken with age. I hope this helps!

your word would be isle.

isle is an island or peninsula especially a small one.

if you add the letter "a" you get aisle, which is a passage between 2 rows of something like chairs, shelves, or something else.