Explanation:

Void agreements are those agreements that are not enforceable by law from the very beginning. These agreements are deemed to be invalid or non-existent. Let us understand the characteristics of void agreements to understand the correct option.

Characteristics of Void Agreements:

1. No Legal Effect: A void agreement is an agreement that has no legal effect from the very beginning. It is not enforceable by law, and neither party can claim any remedy for non-performance of such an agreement.

2. No Obligation: A void agreement does not create any legal obligation on any of the parties to the agreement. Hence, no party can be forced to perform the terms of the agreement.

3. No Validity: A void agreement is considered to be invalid or non-existent from the very beginning. It does not create any legal rights or duties for the parties involved in the agreement.

Based on the above characteristics, we can conclude that void agreements are not necessarily illegal. Let us understand this in detail.

Why are void agreements not necessarily illegal?

1. Void agreements can be created due to various reasons, such as:

- Agreement is against public policy
- Agreement is entered into by a minor
- Agreement is entered into under coercion
- Agreement is entered into under fraud or misrepresentation
- Agreement is entered into with a person who is not competent to enter into a contract

2. Some void agreements may be legal in nature, but they lack an essential element required to make them enforceable by law. For example, an agreement that is not in writing, as required by law, may be void due to lack of formalities, but it may not be illegal in nature.

3. Void agreements may not necessarily be against the law. For example, an agreement between two parties to commit a crime is not enforceable by law and is considered void. However, this does not mean that the agreement is legal in nature.

Conclusion:

Based on the above discussion, we can conclude that void agreements are not necessarily illegal. They can be created due to various reasons, and they lack an essential element required to make them enforceable by law. Therefore, option B is the correct answer.