This isn't a normal school question, but could be considered health. I walked 2 miles to school just a few minutes ago and on the way here my chest cramped and my heart starting hurting and still is, what is wrong and what do I do?

I think that’s heart burn

Explanation: you should be perfectly fine in a couple of minutes, as to why it’s happening I’m not entirely sure.

answer; genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes;

answer; (c) all the above