How many quadrilaterals are there in the given figure?

Show answer & explanation
Correct answer: D
Explanation
Given figure:

Small quadrilaterals = 7
Medium quadrilaterals = 4
Large quadrilaterals = 4
Irregular quadrilaterals (these are formed by combining two small regions together across the middle lines) = 2
Whole figure = 1
Total quadrilaterals = 18
Hence, the correct answer is option (4).