Final answer:
Semantic memory is best described as a type of long-term memory that stores general knowledge and facts, such as the meaning of words and world knowledge.
Step-by-step explanation:
The best description of semantic memory is memory for general knowledge and facts. Unlike episodic memory, which is about events we have personally experienced, semantic memory involves knowledge about words, concepts, and language-based knowledge and facts. This type of memory includes things like the meaning of words, historical facts, and world knowledge. For example, knowing that the Earth revolves around the Sun or that Barack Obama was the first African American president of the United States are both examples of semantic memory.