Answer:
SER
Explanation:
Smooth Endoplasmic Reticulum
These are fat-based molecules that are important in energy storage, membrane structure, and communication (steroids can act as hormones). The smooth endoplasmic reticulum is also responsible for detoxifying the cell.
A is the correct answer I belive
Probably through a electron microscope either TEM or SEM. or possibly a picture through the microscope. I hope that helped.