One option is to test the answer choices....

A) 13
This means x/16 = 13, which means x = (16)(13)
We're told that √x > 16
Notice that √(16²) = 16
Since (16)(13) is LESS THAN 16², we can be certain that √(16)(13) is LESS THAN 16
Since this answer choice does not satisfy the condition that √x > 16, we can ELIMINATE A

B) 14
This means x/16 = 14, which means x = (16)(14)
Since (16)(14) is LESS THAN 16², we can be certain that √(16)(14) is LESS THAN 16
Since this answer choice does not satisfy the condition that √x > 16, we can ELIMINATE B

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E) 17
This means x/16 = 17, which means x = (16)(17)
Since (16)(17) is GREATER THAN 16², we can be certain that √(16)(17) is GREATER THAN 16
Since this answer choice satisfies the condition that √x > 16, this must be the correct answer.

Answer:

Cheers,
Brent