I think your answer would be c. because it shows specific detail about what her grandparents used to do and ate.
Describing the beach like the sand, the heat, the way the ocean is moving, the temperature of the beach water, etc.
Hope this helps a bit <3
Calliope in greek mythology (beatiful voice) is the muse who presides over eloquence and epic poetry. calliope was daughter of zeus and mnemosyne, by believing to be homer muse and get inspired from odyssey and the lliad.
hope this help