Why is the research plan pivotal to a research project?
it identifies the focus and method of the research project.
it educated people make life decisions.
it allows students to practice reading critically when faced with conflicting information.
it provides important scientific and medical data to the public.

A. It identifies the focus and method of the research project.

Before one begins anything, one needs a plan.  Say you were traveling; beyond knowing where you wanted to go, what you would really need to know is how you intended to get there.  The same can be said for the construction of a research project.  A research plan will contain your goals, strategy for your research, what your resources are, perhaps a bit of a bio, significant/relevant research on your topic that already exists, and any preliminary findings you already have and what you have done so far.  All of these components will identify your focus and methods and help you get to where you want to go with regard to results of your research.

the legal limit for the drivers who can drive after consuming any amount of alcohol is 21 years.

explanation:

on november 1, 1996, a "zero tolerance law" was put into effect in the new york state.

according to this zero tolerance law, for people under the age of 21 years, it was illegal to purchase and possess alcohol or to drive after consuming any amount of it.

also, the alcohol involvement rate for the drivers under the age of 21 was roughly twice that of elderly drivers.