Identify the incorrectly punctuated sentence.

a. Remember to turn off the lights and lock the door.
b. On our trip we will be driving, and taking the train.
c. Fred will feed the cat, and Rose will pick up the mail.
d. The weekend was short but fun.

b. On our trip we will be driving, and taking the train.

b. On our trip we will be driving, and taking the train.

To identify the incorrectly punctuated sentence, let's examine each option.

a. "Remember to turn off the lights and lock the door." - This sentence is correctly punctuated with a period at the end.

b. "On our trip we will be driving, and taking the train." - This sentence is incorrectly punctuated because it uses a comma before the coordinating conjunction "and," which should not typically be preceded by a comma between two parallel clauses. To correct this, the comma should be removed.

c. "Fred will feed the cat, and Rose will pick up the mail." - This sentence is correctly punctuated with a comma before the coordinating conjunction "and."

d. "The weekend was short but fun." - This sentence is correctly punctuated with a period at the end.

From the options provided, the incorrectly punctuated sentence is:
b. On our trip we will be driving, and taking the train.

Note: If there were additional options not provided here, it is essential to review and evaluate them all to ensure accuracy.