Answer:



And with the difference we got: 0.739-0.390 = 0.349
And if we convert the probability to % we got 0.349*100 = 34.9%. And the best answer would be:
C. 34.9%
Explanation:
For this case we want this probability:

And we can find this probability using the normal standard distribution and with the following difference:

If we find the individual probabilities we got:


And with the difference we got: 0.739-0.390 = 0.349
And if we convert the probability to % we got 0.349*100 = 34.9%. And the best answer would be:
C. 34.9%