Final answer:
The correct answer is c) Endoplasmic Reticulum, as the smooth endoplasmic reticulum (SER) is involved in lipid synthesis, storing calcium ions, and detoxifying certain chemicals.
Step-by-step explanation:
The endoplasmic reticulum (ER) plays a significant role in various cellular functions depending on its type. The smooth endoplasmic reticulum (SER) is primarily involved in the synthesis of lipids, including phospholipids and steroid hormones. It also stores calcium ions, which are vital for cell signaling processes, and is involved in the detoxification of certain chemicals, such as pesticides, preservatives, and medications, especially in liver cells where detoxification is prominent.
Given the functions mentioned, such as lipid production, calcium storage, and detoxification, the correct answer to the student's question is c) Endoplasmic Reticulum.