The correct answer is 12.

Solution:

Considering the given number pattern.

Here, the numbers are decreasing.
So, to find the missing number, we first find the rule.

Note that:
18 - 2 = 16
16 - 2 = 14
14 - 2 = 12
12 - 2 = 10

So, the rule is "subtract 2".

Then, the missing number is 12.