Answer:
B. Episodic; Semantic
Step-by-step explanation:
Episodic memory is the actual memory of a single occurrence that a person has, and it would be different from the recall of the same encounter by someone else, it is a kind of long-term memory involving conscious recall of past experiences and their meaning.
Sue is trying to remember the first thing she ever knitted, this reflects she is trying recall an episodic memory because it's a personal experience/knowledge.
Semantic memory refers to the general awareness of the universe that we have gained over our entire lives, semantic memory consists of general facts and knowledge.
Mary is trying to remember what the word knitting means, she is trying to recall an semantic memory, because the definition of knitting is a general knowledge and not a personal experience/knowledge.