Sounds like it could be C, but I don't have much context.
They Are Technically Cold-Blooded as They Are Amphibians :D (Not Reptiles)
A. all yellow
they will look all yellow but all will be heterozygous
Answer:
1.It produces silk which is a high quality fibre
2.to destroy the gelatinious substance inside cocoon so as to obtain silk thread
3.To avoid it from hatching
4.they carry pollen grains while roaming plant to plant and help in cross pollination