The following is a source of parasitic worms' raw eggs. Thus, option "A" is correct.
What are parasitic worms?
Some worms (schistosomes) disguise their outer surface by acquiring host molecules which reduce their antigenicity.
Filarial nematodes obtain serum albumin on their cuticle which acts as a disguise.
Thus, option "A" is correct.
To learn more about parasitic worms' click here:
https://brainly.com/question/9615295
#SPJ2
