It's difficult to write it down, but I'll attach you a good example of hydroboration of indene. I hope you'll find it helpful.
Answer:
Enzymes.
Explanation:
That would be enzymes. They increase the rate of chemical reactions in cells.
Within the core of the Sun, temperatures and pressures are high enough to fuse hydrogen atoms into helium, which is the Sun's main form of energy production. Assuming there was a slight mistake in where you have copied the results here the correct answer is the third option.
Hope this helps!
