Question

the nuclear envelope contains ____________. a chromosomes b dna c rna d two phospholipid bilayers

Explanation:

The nuclear envelope is a double - membrane structure. Each membrane is a phospholipid bilayer. So, it contains two phospholipid bilayers. Chromosomes (which contain DNA and proteins), DNA, and RNA are inside the nucleus but not part of the nuclear envelope's structure.

Answer:

d. two phospholipid bilayers