Answer:
B) We had a few minutes to play games, then we had to go inside and do
our math, science, spelling, and English.
Step-by-step explanation:
Although "then" is not a fanboy, it is a type of conjunction, and can be used with a comma before it according to the American Heritage Dictionary. Commas also need to be used to separate items in a list, and that is why we have them in between math, science, spelling, and English. Thus, the second option is the correct answer.