Which of the following is an example of presumptive disability?

Presumptive disability refers to certain conditions that are automatically deemed to result in disability for purposes of insurance, without the need for further medical evaluation. In the context of the given options, deafness is recognized as a presumptive disability because it typically has a clear and definitive impact on a person's ability to function in everyday life, and most insurance policies will classify total hearing loss as a disability outright.

Loss of limb, blindness, and paraplegia are also serious conditions, but they may not all be automatically categorized as presumptive disabilities in every insurance policy. For instance, while blindness is often treated similarly to deafness as a presumptive disability, the classification can depend on specific definitions within individual insurance contracts. However, deafness stands out because it is frequently recognized in many policies as a condition that eliminates the need for additional proofs of disability.

Thus, deafness is the best example of presumptive disability among the options provided.