Briefly elaborate on the idea that everyone at Rivai Resources Northern Cape is responsible for operations even though they don't all work in mining production. Incorporate the concepts of "operations as a function" and "operations as an activity" in your answer.

How does operations function at Rivai Resources Northern Cape, and why is it essential for all employees to understand this concept?
a) Operations involve all aspects of business activities, from procurement to customer service, ensuring smooth functioning and efficiency.
b) Operations as a function encompass the core activities that contribute directly to value creation, such as production and distribution.
c) Operations as an activity refer to the day-to-day tasks performed by individuals across various departments, influencing overall operational performance.
d) All of the above.