The smooth ER and Golgi apparatus
The smooth ER is responsible for synthesizing sterols, and the Golgi modifies and packages the hormones for secretion.
If this is a question from a class and requires only one answer, I would go for Golgi because they're stressing the fact that insulin is a secreted protein (always associate Golgi with secretion).
The smooth ER is responsible for synthesizing sterols, and the Golgi modifies and packages the hormones for secretion.
If this is a question from a class and requires only one answer, I would go for Golgi because they're stressing the fact that insulin is a secreted protein (always associate Golgi with secretion).