Step 1: Observe the pattern
Look at the differences between consecutive terms:
5 - 2 = 3
10 - 5 = 5
17 - 10 = 7
26 - 17 = 9
Step 2: Identify the pattern in differences
The differences are increasing by 2: 3, 5, 7, 9, ...
Step 3: Find the next difference
Next difference should be 11.
Step 4: Calculate missing number
Missing number = 26 + 11 = 37.
Step 5: Check options
Option (C) is 37, but option (A) is 35 as per original; the pattern clearly shows 37.
So the correct answer is (C) 37.