Completely parasitic order is

A. Hemiptera

B. Strepsiptera

C. Odonata

D. Coleoptera

Answer: Option B

Solution(By Examveda Team)

The completely parasitic order is Strepsiptera.
The Strepsiptera are an order of insects with eleven extant families that include about 600 described species.
They are endoparasites in other insects, such as bees, wasps, leafhoppers, silverfish, and cockroaches. Females of most species never emerge from the host after entering its body, finally dying inside it.