The answer is C. Litchi.
Pear, apple, guava, and orange are all pomes, which are fruits that have a fleshy outer layer and a core that contains seeds. Litchi, on the other hand, is a drupe, which is a fruit that has a fleshy outer layer, a hard stone-like pit, and a seed inside the pit.
Pears are a type of pomaceous fruit that is native to Europe and Asia. They are typically round or oval in shape and have a thin, smooth skin that can be green, yellow, or red. The flesh of a pear is white or cream-colored and is usually juicy and sweet. Pears can be eaten fresh, cooked, or made into juice or jam.
Apples are a type of pomaceous fruit that is native to Europe and Asia. They are typically round or oval in shape and have a thin, smooth skin that can be red, green, or yellow. The flesh of an apple is white or cream-colored and is usually juicy and sweet. Apples can be eaten fresh, cooked, or made into juice, cider, or applesauce.
Guavas are a type of pomaceous fruit that is native to Central and South America. They are typically round or oval in shape and have a thick, rough skin that can be green, yellow, or red. The flesh of a guava is white or pink and is usually juicy and sweet. Guavas can be eaten fresh, cooked, or made into juice, jam, or jelly.
Oranges are a type of citrus fruit that is native to Asia. They are typically round in shape and have a thick, orange skin. The flesh of an orange is divided into segments and is usually juicy and sweet. Oranges can be eaten fresh, juiced, or used in cooking.
Lichees are a type of drupe that is native to China. They are typically round or oval in shape and have a thin, red skin. The flesh of a lychee is white and is usually juicy and sweet. Litchis can be eaten fresh, canned, or made into juice or jam.
The key difference between a pome and a drupe is that a pome has a fleshy outer layer and a core that contains seeds, while a drupe has a fleshy outer layer, a hard stone-like pit, and a seed inside the pit.