The answer is "WAS". Hope this helps.
Answer:
The author uses the word "metamorphosis" to describe the "four-stage process of change." They are introducing new vocabulary terms in a friendly context. They also may have included it because it's the most accurate scientific term for the process of growth undergone by the beetle.
punta ka Google then search mo 'yang tanong mo
di'ba Sabi ni'la Alam ni google lahat ka'ya Alam ni google 'yan
