Which forms of the word: "memory" will fit the sentences given below?

Good _____ are our prized possessions. The days I spent with you are the most __ days of my life. Students must try to understand and then _____ the lessons for better retention.

The first blank needs the plural noun "memories" as it refers to multiple recollections. The second requires "memorable" as an adjective to describe the days. The third needs the verb "memorize" to show the action students must perform. Option B correctly matches: memories (plural noun), memorable (adjective), memorize (verb).