27
35
45
56
Answer is Wrong!
Answer is Right!
The answer is 45.
The sequence is $3^2, 5^2, 7^2, 9^2, 11^2, 13^2$.
Option A: 27 is not a perfect square.
Option B: 35 is not a perfect square.
Option C: 45 is a perfect square, and it is the square of 7.
Option D: 56 is not a perfect square.