Final answer:
The condition used in the statement is an If-else condition, which is similar to the second conditional in English used for hypothetical situations.
Step-by-step explanation:
The condition mentioned in the statement "I would be the happiest person alive if I won the lottery" corresponds to an If-else condition. In programming, an If-else condition is used for decision-making where the outcome of a condition will determine a different set of instructions to be executed. In English, this is similar to a hypothetical situation often referred to as a conditional sentence. This type of condition is typically categorized under the second conditional, which is used to talk about hypothetical situations that are unlikely but possible.