The form of the word 'derive' which would be best used in the sentence is:
a. derivable
Explanation:
The sentence will be:
The math problem was incredibly complicated, but its solution was easily derivable from the clues we were given by the teacher.
Word forms are the number of ways a word can be used. The same word can be used as a noun, verb, or an adjective in different ways and different sentences. Also, by adding suffixes and prefixes they can be further used.
