Correct sentence: We are going to a school cycling trip tomorrow.
Explanation:
This sentence is correct because it answers the question of when?who? what?
It tells the reader what would be done, when the trip would be made, and who would make the trip. It is important when making a sentence that you determine whether the sentence passes clear information to the recipient or reader.
C - It has its own structure, grammar, and word order
Explanation: Linguists have postulated that this is because the sentence contains some unpronounced -- but cognitively real -- logical variables like x and y.