The rough endoplasmic reticulum helps in processing of proteins, the correct option is D.
What is rough endoplasmic reticulum?
Rough endoplasmic reticulum is a series of connected flattened sacs that form part of an ongoing membrane organelle within the cytoplasm of eukaryotic cells.
It plays an important role in protein synthesis as several ribosome are attached to its membrane giving it a rough texture.
Thus, the correct option is D.
For more details regarding endoplasmic reticulum, visit:
https://brainly.com/question/13118914
#SPJ5
