When referring to knowing where to find something when you need it you mean that you do not need a memorization of all things, you just need a source to find it when in need. I hope this answer suited your needs.
Explanation:
The correct answer is the nervous system. It is because the CNS or the nervous system is the one responsible for sending or transmitting signals from the brain throughout the body in order for it to function, this also involves of having to communicate, process and store memory in an individual.
The heat conducts and burns