Prime factorization of 240 in expanded form

C)24 · 3 · 5

Step-by-step explanation:

Factor the number until you get down to the number 15. At this point, factor by 3 and you’ll be able to finish. 240 = 2 · 2 · 2 · 2 · 3 · 5 = 24 · 3 · 5. The choices containing 7 as a factor could have been eliminated immediately, by attempting to divide 240 by 7.