The sentence ends with a string of "wh-" noun clauses. These clauses are usually not thoughts, so the final a single should also not be a question. "Which 1 would be the best" is obviously an issue format, so it makes sense that " Vitamin B-twelve is a vital nutrient https://cureayunaturalhealthcaresolutions.blogspot.com/2025/08/cureayu-reliable-ayurvedic-medicine-for.html