Sentence Correction (SC) | Re: The type of behavior exhibited when an animal recognizes itself in a m

My reasoning.
A- the two verbs comes and is for subject type of behavior are not corrected properly connected. Two verbs for same subject must be connected using proper parallel connectors.
B- "comma" and is used to connect two independent clause. Here and is not followed by independent clause.
C- "thus it is" and type of behavior comes, the two independent clauses are not connected properly. The correct way to connect two independent clauses is either by using "comma"