What is the aim of studying commerce and what are its main branches and auxiliaries?

Here are the solutions to questions 1 to 18:

1. The aim of studying commerce shows the importance of satisfying human wants.
The correct option is A.
Commerce primarily facilitates trade, which is the exchange of goods and services to satisfy human wants.

$$\boxed{\text{A) Trade}}$$

2. The main branch of commerce is:
The correct option is C.
Commerce is broadly divided into trade and auxiliaries to trade. Trade is the central activity.

$$\boxed{\text{C) Trade}}$$

3. An auxiliary of trade which assists traders to have a continuous supply of goods for their customers is:
The correct option is D.
A warehouse stores goods, ensuring a steady supply to meet customer demand even