Answer:
C. The degree of overlap between the two distributions is low.
Step-by-step explanation:
Overlapping can be defined as the intersection between areas of two normal distributions. The overlap means that sample or populations have similarities, which occasionate this behaviour.
In this case, we have two normal distributions (you can deduct that observing the bell form). If you look closely, you'll observe that the tails of theses distributions overlap, but just the tail, that means they have a low degree of similarity.
Therefore, the right answer is C, the degree of overlap is low.