Every institution will set a minimum qualifying score for CLEP exams. If you reach the required score, the institution will determine the credits it will award the student. The two sample scenarios where this may happen: Find out what credits can be earned, and other factors that may affect the test, the results and credit.
Im pretty sure your answer is the last one
Because singular elements don't have numbers in them those are chemicals or mixes
So Zn and ZnCl
B. Octopus’s ability to squirt ink