Answer:
Your answer would be that you should make the verb tenses consistent.
Step-by-step explanation:
You should make the verb tenses consistent to make the sentence parallel. Parallel structure, also called parallelism, is the repetition of a chosen grammatical form within a sentence. By making each compared item follow the same grammatical pattern, you create a parallel construction. In the sentence above, including takes the VP to perform as a complement. That is why the verb takes the -ing form. Consequently, all the verbs should end in -ing (perfoming, devoloping, and studying). In this way, the sentence would have a parallel structure.