The reasonable person standard is a measurement of how a typical member of a community would behave under a certain set of circumstances. This is a term used in law in order to describe a hypothetical person that can be used as a standard in case law and jury instructions. The "reasonable person" is often used as a comparison against which a criminal's behaviour can be studied.
A reasonable person standard appears in almost all types of law, be it Civil right Law, Criminal Law, Contract Law etc; it's a test used to measure the way the society's members want an individual to act in a given situation. This standard gives room for an individual to protect his/her interest and that of the society members as well. It requires an individual to be fully informed about the level of knowledge, type of experience/exposure the society is expecting from a reasonable person as the individual with be compared with "reasonable person".
The Legislative Branch, consisting of the Senate and House of Representatives, has the ability to makes all laws, declare war, regulate interstate and foreign commerce and control taxing and spending policies.