The way you know the subject of the sentence is plural is because it takes a plural verb. You can see that the subject of the sentence is <em>the ova </em>(plural for of Latin word <em>ovum</em>, <em />meaning egg cell), and the verb it takes is <em>undergo </em>(plural)<em>, </em>and not <em>undergoes, </em>which would be singular.
Answer: B
Explanation:
I don't know much about gerunds and I'm not very good at explaining but a gerund is a form that is derived from a verb but it functions as a noun.
The answer is morph as it stands for "form" or like said "having a form"
