The answer is elements gain electrons. Oxidation reduction is elements lose electrons. And oxygen is added/lost can be a type of oxidation/reduction reaction.
Bromine (Br) is the only element listed that is a diatomic element. I believe that Bromine is going to be your answer.
either c or d but more likely d because food is mainly broken down in your stomach
It would be NaOH + HCl → <span>NaCl + H2O
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NaOH is sodium hydroxide, which is a strong base. HCl is hydrochloric acid, which is a strong acid.
You have a strong base and a strong acid on the left side, however, at the result side, you end up with NaCl + H2O. Sodium chloride is simply table salt and H2O is just water, thus it has been neutralized.
They fuse helium into carbon. Hope it helped