Answer:
2. False
Explanation:
Capacity to a contract refers to whether the person to a contract is legally competent to enter into such a contract.
For instance, lunatics, drunkards, minors, criminals and person of unsound mind are deemed incapable of entering into a contract.
A person diagnosed with dementia, which impairs his decision making would normally be regarded as incapable to signing a contract.
But, capacity is ascertained as per the situation i.e at the time the contract is signed or entered into.
In the given case, Ronald entered a contract while he was sane and in healthy state of mind. His judgement at the time of entering such a contract wasn't impaired by dementia.
Thus, the contract will be legally enforceable as per the law.