Reproduction produces offspring by combining the genetic information from 2 parents

This is true and occurs mainly in sexual reproduction. In man, the male gamete (sperm) meets and the female gamete (ovum or egg) and fertilization occurs to produces what is called a zygote. Both sperm and ovum are haploid meaning each of them has only one complete set of chromosomes (23 pairs). The zygote formed is diploid meaning that it has two complete sets of chromosomes - 46 pairs. The zygote soon develops into an embryo, which develops into a baby.

Where are the options?

Atp is is our little "pocket" of energy. of course, if you have too little, then it means you have too little energy, and you'll pass out. the way to not have enough, is to have no energy sources (glucose, fats, proteins). you can't have too many atp molecules. cycles like the krebs cycle produce it, but if you have too much of any substrate (or too little for that matter), the cycle stops and atp is no longer made (it stops until substrate levels are such that the process can go on). in any case, this is unlikely since atp is constantly hydrolyzed and remade, even while you're asleep. you won't have too much. if you have zero, you are dead or dying.