Final answer:
The true and falsifiable statement is that Jupiter has planetary rings, which are not as bright as Saturn's. This can be tested and disproven through observational methods. The correct option is d.
Step-by-step explanation:
The statement that is both true and falsifiable is (d) Jupiter has planetary rings which are not as bright as Saturn's. This statement is true because Jupiter does indeed have rings, although they are faint compared to Saturn's famous rings.
This claim is falsifiable because it can be tested and potentially disproven through observation or experimentation. For example, if new observations were to show Jupiter's rings to be as bright as Saturn's, then the claim would be falsified.
Statements about aesthetic judgment or unproven historical conditions like (b) The Moon looks nicest when it is full or (e) Mars used to support life are not generally falsifiable, as they are subjective or require evidence that may not be available. The correct option is d.