Final answer:
An b. ovarian cell that produces estrogen would have the most smooth endoplasmic reticulum since SER is heavily involved in the synthesis of steroid hormones.
Step-by-step explanation:
The cell with the most smooth endoplasmic reticulum (SER) would be the ovarian cell that produces estrogen. This is because one of the primary functions of the SER is in the synthesis of lipids and steroid hormones, such as estrogen. Cells that produce large quantities of such hormones, like those in the ovaries, contain large amounts of smooth ER. In comparison, a pancreatic cell secretes enzymes and would have more rough ER for protein processing, a muscle cell would have more smooth ER related to muscle contraction functions, and a white blood cell would have a different set of organelles specialized in engulfing bacteria.
The smooth endoplasmic reticulum (SER) is most likely to have the greatest concentration in a ovarian cell that produces estrogen (a steroid hormone). This is because the smooth ER is responsible for synthesizing lipids, including steroid hormones, and cells that produce large quantities of such hormones contain large amounts of smooth ER. In addition to lipid synthesis, the smooth ER also has functions in the detoxification of certain toxins and the storage and regulation of cellular calcium ions.