Concept:The oil industry is usually divided into upstream and downstream sectors, based on whether the activity deals with raw crude oil or refined products.
Explanation:Upstream activities include exploration, drilling and production of crude oil.
They also cover the handling of crude oil until it is ready to be transported for refining.
Loading crude oil at the terminal takes place while the oil is still unrefined and in its natural state.
This means it is part of the production stage, not the refining or marketing stage.
Downstream activities begin only after crude oil has been refined into products such as petrol and kerosene.
Since the question describes a single activity, the correct sector is simply the upstream sector, not a combination of sectors.
Answer:C. upstream sector of the oil industry.