Make a conjecture about the next item in the sequence. 1, 1, 2, 3, 5, 8
a. 11
c. 13
b. 12
d. 14 select the best answer from the choices provided a b c d

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given