The correct answer is option 'A' - Necessities.

A minor is liable for the necessities supplied to him. Let's break down this statement and understand it in detail:

1. Definition of a minor:
- A minor is a person who has not reached the age of majority, which is typically 18 years old. In some jurisdictions, it may vary.

2. Liability of a minor:
- Liability refers to the legal responsibility or obligation to pay for something. In the context of a minor, it means the extent to which a minor can be held responsible for his actions or debts.

3. Necessities:
- Necessities are essential items or services required for the well-being and survival of an individual. These include food, clothing, shelter, medical care, education, and other basic needs.

4. Explanation of the answer:
- According to the law, a minor is liable for the necessities supplied to him. This means that if a minor acquires necessary items or services, he is responsible for paying for them, even though he is under the age of majority.

- The rationale behind this is that necessities are fundamental for the minor's well-being and cannot be denied to him. Therefore, the law allows creditors to hold a minor accountable for the payment of these essential goods and services.

- It is important to note that a minor's liability for necessities is limited to his own capacity. This means that if the minor does not have sufficient funds or means to pay for the necessities, the liability may fall on his parents or guardians.

- However, a minor is not liable for luxuries, which are non-essential and extravagant items or services. Creditors cannot hold a minor responsible for the payment of such goods or services.

- It is also worth mentioning that the laws regarding the liability of minors may vary in different jurisdictions. Therefore, it is essential to consult the specific laws and regulations in the relevant jurisdiction to determine the extent of a minor's liability for necessities.

In conclusion, a minor is liable for the necessities supplied to him. This means that a minor can be held responsible for paying for essential items or services, such as food, clothing, shelter, and medical care. However, a minor is not liable for luxuries or non-essential goods and services.