Standard English conventions

The phrase 'children's books' correctly places an apostrophe after the plural noun children to show possession, indicating books belonging to children. Option A omits the apostrophe entirely, treating 'childrens' as a regular plural, which is incorrect because the possessive form requires the apostrophe. The other choices add extra letters or misplaced punctuation, violating standard possessive rules.

The sentence contains a complete subject ('the team') and verb ('surveyed') and is properly punctuated with a comma after the introductory clause, so it stands as a single independent clause. It is not a run‑on because there is no inappropriate joining of two independent clauses, and it is not a fragment since it expresses a full thought.

The subject 'Each of the students' is singular, so the verb must be singular 'is', making option B correct. A diagram for this topic isn't available yet — the worked example below walks the same reasoning step by step.

• !Option A omits the apostrophe entirely, treating 'childrens' as a regular plural, which is incorrect because the possessive form requires the apostrophe.
• !Options B and D misuse future or gerund forms, and C is a sentence fragment, so they fail to complete the thought correctly.
• !Option A is incorrect because the sentence as written contains this grammatical error.
• !Option A is incorrect because the infinitive verb 'to bike' breaks the established grammatical structure of the sentence.
• !Option A is incorrect because 'is' is a singular verb, which is often used colloquially but is grammatically incorrect in this formal context.

Answer each from memory — you'll see instantly whether you're right and why.

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