Final answer:
The correct answer is Option B: After 20 minutes, Laura had already forgotten about half of the syllables. After one day, she could recall only 30% of the syllables, and after 6 days, she could barely recall any of them.
Step-by-step explanation:
The correct answer is Option B: After 20 minutes, Laura had already forgotten about half of the syllables. After one day, she could recall only 30% of the syllables, and after 6 days, she could barely recall any of them. This is in line with research on memory retention. According to Hermann Ebbinghaus, an average person will lose 50% of the memorized information after 20 minutes and 70% after 24 hours. This phenomenon is known as storage decay, where the memory trace becomes less activated over time, leading to forgetting. Based on the information provided, Laura's ability to recall the nonsense syllables decreased over time, indicating a typical forgetting curve.