In this sentence, there are 3 verbs if we count Writing to be a verb. It is a gerund that functions as a noun, but is technically still a verb. Can and Learn are also verbs, so the correct answer should be 3.
The photosynthesis has to go though the bisector in order for the vectors to be ping spoofed. When the universal infrastructure is 14 degrees the photosynthesis cant go through the bisector because the periapsis of the vector is too large.