Answered

The structure that surrounds the cytoplasm in a bacterial cell is the 

Aplasma membrane.B. cel wall.C. ribsosome.D. nucleoid.

Verified Answer :

A because Nucleoid- Prokaryotes are characterized by their lack of a ‘’true’’ nucleus. In stead of a nucleus, they have a nucleoid where their genetic material is localized and it found in the cyctoplasm. Ribsosome: a sphere-shaped structure found in the cytoplasm of prokaryotic and eukaryotic cells. Cell wall: a rigid layer of polysaccharides enclosing the membrane of plant and prokaryotic cells

I think it is the plasma membrane.