4 circumstances impairing validity of contract Q1

Q.
Explain four (4) circumstances that may impair the validity of a contract.

(20 marks, 2016 Q1)

A.
Similar question was asked in

2013 Q8
2016 Q1 (This question)
MIA QE 2012/3 Q1 (b) (iv)
Common and Mutual Mistake

In a nutshell, the 4 circumstances are:

1. Coercion

2. Fraud

3. Misrepresentation

4. Undue influence

Because in the above conditions there is no free consent, thus the contract is voidable.

Ref:
Earlier posts.