We can say the best place to add the new sentence in order emphasize the uncertainty expressed is, among the given options, after sentence:
B. 2
As is explained in the question, the purpose of the new sentence is to emphasize the uncertainty expressed by the author. Therefore, it must come after the sentence that expresses that uncertainty.
Sentence 1 mentions organized T-ball. Sentence 2 expresses uncertainty about it's being "organized". The other sentences proceed to explain why the author does not see much organization in the sport.
Therefore, the new sentence would be placed correctly after sentence 2, amplifying its uncertainty.
Learn more about sentence placement here:
https://brainly.com/question/25766118