Answer :
The incorrectly punctuated sentence is A. We went to the store but we forgot to buy eggs.
What is a punctuation?
This is known as the use of spaces, signs and the use of various typographical tools to aid the understanding and correct reading of a written text.
Hence, we can see that the option A is incorrectly punctuated because the sentence is without a comma. The comma should come right after the word store as that is a simple sentence, to correctly make it a compound sentence, a comma is added and the rest of the sentence follows.
Read mote about punctuation here:
https://brainly.com/question/1224394
#SPJ1