Answer: Not always true
Step-by-step explanation: This statement is an example of converse, that is, if the assumption is true as in this case, "If I'm hungry, then I am not happy," then the hypothesis drawn out as a conclusion can be accurate but also false. In this case, the first sentence is the initial statement, the one that gives the condition on the basis of which we draw the final conclusion, the hypothesis, i.e. the second sentence of this example "If I'm not happy, then I must be hungry". Our final conclusion, hypothesis, can be correct, since if someone is hungry, then he is not happy, but he can also be false, because feeling that someone is unhappy can be caused by for any other reason. Therefore, it does not necessarily mean that if someone is unhappy then he is necessarily hungry.