The theory is most likely accurate and the main reason behind this process of thinking is because a majority of the scientists around the world agree with the theory. It can never be biased or incomplete. The correct option among all the options that are given in the question is the third option or option "C".
Chemical or Nuclear. Probably, Chemical.
Hope this helps! I found it when I searched your question.
A number of factors combine to make high<span> conversion </span>molecular weight<span> ... to </span>higher<span> molecular weights, because the larger polymer molecules are the </span>most<span> likely to ... the polymerization is performed at rising </span>temperatures<span>, rather than isothermally, ... had a normal curve with a small fraction of </span>low-molecular weight<span> oligomers.</span>
There are 118 confirmed elements on a periodic table.Your answer is 118.