Homologous structures show evidence of based on similar bone structure. A:Heredity
B:Common ancestry
C:Natural selection
D:Diversity

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

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hello from mrbilldoesmath!

answer:

104 f = 40 c

discussion:

9/5c + 32 = f               => in our case, f = 104

9/5c + 32 = 104           => subtract 32 from both sides

9/5c         = 104 - 32   =>

9/5c   = 72                   => multiply both sides by 5/9 (the reciprocal of 9/5)

(5/9)*(9/5) c = 72 * (5/9) =>

c = 72*5/9 = 360/9 = 40

you,

mrb

b is the right answer for this question.