One of the human memory process called an attention (lack of attention) was the primary reason that caused her to have trouble remembering her last class.
The human memory has huge capacity in decoding & encoding messages and the attention is the process that helps in determining what will be encoded.
In conclusion, the human memory process called an attention was the primary reason that caused her to have trouble remembering her last class.
Read more about attention
brainly.com/question/7067433