Explanation:

- Option 1: "concern to"

- This phrase is generally not grammatically correct in this context. "Concern to" is rarely used, and when it is, it typically follows expressions like "of no concern to."

- Option 2: "concern for"

- This is often used to express worry or interest in someone or something, but it doesn't fit here as it implies care or regard for the future, not questions about it.

- Option 3: "concerning"

- This is the right choice. "Concerning" means about or regarding, which fits perfectly as it indicates the questions are about the future of the organization.

- Option 4: "concerned with"

- This phrase usually means having to do with or involving. It could fit, but it's less direct than "concerning."