What is the next number? 2,3,5,7,11,?,17. A)12 B)13 C)14 D)15

The right answer is B $13$
Explanation:
Option (B): We have series is $2,3,5,7,11,?,17$.
Observe that the given numbers are part of a series of prime numbers beginning with $2$.
A prime number is a whole number greater than $1$ with only $1$ and itself as factors.
Now, the missing term will be the prime number after $11$, which is $13$.
Hence, the missing number is $13$.
Therefore, option (B) is right.