Final answer:
The California Senate has the authority to confirm or reject certain gubernatorial appointments.
Step-by-step explanation:
The correct statement about gubernatorial appointments is b. The California Senate has the authority to confirm or reject certain gubernatorial appointments.
According to the information provided, gubernatorial appointments do require approval from the legislature. The 17th Amendment of the Constitution allows governors to make temporary appointments, but a special election must be held to fill the vacancy. The Constitution also allows for recess appointments by the president, but these appointments are temporary and cannot last longer than the next session of Congress.