In a normal distribution:
a. most scores will occur in the high range.
b. most scores will occur in the low range.
c. most scores will fall in the middle range.
d. scores will be evenly spread across the entire range.

c. most scores will fall in the middle range.

Explanation:

The mode of a set of data values is the value that appears most often.  If you think about how the normal distribution looks like. The highest point of the bell will be the Mode. In a symmetric normal distribution , the mode will be in the middle.

hygrometers and hair thermometers (often found as part of hygrometers/psychrometers) can be used to measure humidity. barometers are used to measure atmospheric pressure, while anemometers are used to measure wind speed. so the 2nd and 4th choices should be the correct answers.