A) rough endoplasmic reticulum. :)
A; rough endoplasmic reticulum ;
The organelle that surrounds the nuclear membrane is the rough endoplasmic reticulum (RER), which is directly attached to the outer nuclear membrane and is involved in protein synthesis. It has ribosomes on its surface, distinguishing it from the smooth endoplasmic reticulum and the Golgi apparatus. Therefore, the correct answer is A: Rough endoplasmic reticulum.
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