The sentence finishes which has a string of "wh-" noun clauses. These clauses are usually not queries, so the final a person must also not be a question. "Which just one is definitely the best" is clearly a matter structure, so it is sensible that " On 12 Could 2017, https://www.reddit.com/user/Consistent-Load1428/comments/1mtf527/cureayu_trusted_natural_health_products_india_for/