11, 12, 39, 164, 507, ?Question 13Answera.913b.1136c.1236d.1026

To solve this problem, we need to identify the pattern or rule that is being followed in the sequence.

1. The difference between the second and first term is 1 (12 - 11 = 1).
2. The difference between the third and second term is 27 (39 - 12 = 27).
3. The difference between the fourth and third term is 125 (164 - 39 = 125).
4. The difference between the fifth and fourth term is 343 (507 - 164 = 343).

If we look closely, we can see that the differences are the cubes of consecutive natural numbers: 1^3 = 1, 3^3 = 27, 5^3 = 125, 7^3 = 343.

Following this pattern, the next difference should be 9^3 = 729.

So, to find the next term in the sequence, we add this difference to the last term: 507 + 729 = 1236.

Therefore, the answer is c.1236.