Answer:
There are few if any decisive new facts remaining to be unearthed. There continue to be bands of Lincoln assassination enthusiasts who find it irresistible to speculate about what did or did not happen those fateful days in the spring of 1865. But they don't explain the passionate interest in the man.
Explanation:
"There are few if any <u>decisive</u> new facts remaining to be unearthed."
This specific detail supports the inference that not all of the research on Lincoln is accurate since it implies that the information from the research is not solid. The entirety of the sentence hints that people are still researching information about Lincoln, but the information that they find does not have enough substance or material for it to be an actuality. The word "decisive" means that the researchers finding information about him probably feel as if the information found is questionable.
"There continue to be bands of Lincoln assassination enthusiasts who find it irresistible to <u>speculate</u> about what did or did not happen those fateful days in the spring of 1865."
This specific detail supports the inference that not all of the research on Lincoln is accurate because of the word "speculate". The word "speculate" means to "form a theory or conjecture about a subject without firm evidence." This word alone indicates the inference since the association or connotation this word has is with words like opinion, thoughts, observation, etc. Because of this, there is no solid grounding to back up the research on Lincoln, nor is it accurate. It's all up in the air, ready for questioning. Can the research given be proved with trustworthiness and credibility?
"But they <u>don't explain</u> the passionate interest in the man."
This specific detail supports the inference that not all of the research on Lincoln is accurate because it's blatantly stated.
I hope this helps you in any shape or form.