Respuesta :

Equanimity
6 = 1 x 6, 2 x 3
9 = 1 x 9, 3 x 3
18 = 1 x 18, 2 x 9, 3 x 6
19 = 1 x 19.
Your answer is D.) 19.
d, because 19 is a prime number, so it's only factor pair is 19 and 1

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