Which statement displays proper punctuation and grammar? A) We wanted to keep walking and, it had grown too dark. B) It had grown too dark so, we wanted to keep walking. C) We wanted to keep walking, but it had grown too dark. D) We wanted to keep walking; but it had grown too dark.

The correct answer is C) We wanted to keep walking, but it had grown too dark.

Explanation:

Punctuation includes the use of symbols such as comma, semicolon or colon to separate elements in a sentence or text that are used according to specific conventions. On the other hand, grammar refers to the structure of language that is also guided by conventions or rules. The sentence "We wanted to keep walking, but it had grown too dark" is the only one that displays proper punctuation and grammar.

This is because the comma has been appropriately used to separate two independent clauses linked by the conjunction "but". Also, a period has been placed at the end of the sentence. Additionally, in terms of grammar the two clauses "We wanted to keep walking" and "it had grown too dark" have a correct structure as they follow subject-verb - complement structure and the use of the conjunction "but" is appropriate because in this case, the two clauses represent a contrast.

C) We wanted to keep walking, but it had grown too dark