The answer is a slim layer, Flagella, and a Fimbriae
Hope this helps!!
I think it’s C, poisoning wildlife :))
Each of the term is identified whether they arise from the ectoderm, mesoderm or the endoderm.
The thyroid arises from the endoderm.
The thymus arises from the ectoderm.
The anterior pituitary arises from the ectoderm.