Nine-year-old Dustin is very familiar with what happens during the school day. Science (his favorite subject) comes first, then Math, English, recess, lunch, Music, and Social Studies. Dustin has organized his memory using

A) his working memory

B) his semantic memory.

C) a script

D) a concept mode

Answer: B) semantic memory.

Explanation:

Semantic memory is the long-term memory that has ability to recall and recollect the information and general knowledge that is gained from our general lives. This information is based on experience related with culture, events, personal data and episodes of life

According to the question, Dustin is able to organize his subjects through semantic memory because he has experienced these subject's order from daily school life and thus can organize it accordingly and store in memory for long time.

Other options are incorrect because working memory is immediate short term memory. Script and mode of concept is made on well contented information. Thus, the correct option is option (B).