The sentence provided talks about a holiday, Christmas. Holidays need to be capitalized, thus "christmas" is the correct answer.

The sentence that is free of errors is, "All of the grocery stores were closed on Thanksgiving."

Let's look at the other choices:

"I went to the grocery store to buy bread water, and soda." This sentence is not correct because it should have a comma between "bread" and "water" because it's a list.

"Sara slept in latest than her brother." The word "latest" is not the correct word choice. Because the sentence is comparing two people, Sara and her brother, we should use the word "louder" because "er" is added to the adjective when two people are being compared and "est" is added when more than two people are being compared.

"Yesterday I went running" This sentence is not correct because there is no ending punctuation. This sentence should end with a period.

The sentence provided talks about a holiday, Mother's Day. Holidays need to be capitalized, thus "day" is the correct answer.