The answer to your question is B i believe
A. all the way!!! why because the questions says how many cookies does meg have when dennis has 6 less so that means meg has 6 more pennies from dennis
and d= dennis so d+6 is how many pennies meg has.
D is the most likely answer to me personally, because it gives the reader the idea that something happened but doesn't explain anything so the reader is left wanting to know more. The other options are "normal" or bland and don't hook the reader into the story.
It is correct, but I would recommend you take off the "also" at the end and put it in the beginning like this: "Also we can make plans for this Saturday"
But it is perfectly written :)
