A young scientist wants to focus on drug creation. What is one of the first things he should do? A. Look into trends of various diseases and their effects on society. B. Make a plan for how to conquer a disease with drugs. C. Test a composite material in the lab to see how it can be improved. D. Research available drugs for treating illnesses such as cancer and heart disease, as well as the side effects of these drugs.

im pretty sure its b

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.