The correct answer is Morton's Neuroma.
This is a condition which affects the nerves between your toes, and causes you to feel as if you were 'walking on a marble.' You feel constant pain in the ball of your foot which can be helped relatively easy if you change your footwear.
Explanation : x = 79 marks
The marks scored by Mike on four math test are 88,91,75 and 72.
Average of marks, A = 81
Let in fifth test he scores x marks.
The formula for finding average is :




In the fifth test he scores 79 marks.
Hence, this is the required solution.
Answer: The answer is low stomata
The light would be best described as AN UNCONDITIONED STIMULUS.
An unconditioned stimulus refers to any stimulus which naturally evokes a response from the affected person. The response that is evoked is termed unconditioned response. In the question given above, the light is the unconditioned stimulus while the blinking is the unconditioned response.<span />