A) A scientists invents products for companies. Nah!!! Scientist are more or less free spirited, they usually work for the betterment of the so called mankind. So this statement is wrong.
B) A person who asks questions about natural world. Ummmm that sounds sort kind of philosopher not a scientists. So this is not what a scientists does.
C) A person who defends the ideas of others. Absolutely not, rather some scientists are believed to steal ideas of others.
D) Now this is what a scientists means to me. He resolves problems, finds truth, etc.
What are interstate compacts, and what part is played by the national government in these agreements? They are written agreements to settle disputes between two or more states.