B.) A dog walks to a stream and drinks when it gets thirsty
would have to be your answer..
An autotroph is an organism that can build its own food
So,
There is a scientific consensus that life exists on other planets
and
The scientists only studied one meteorite
The first one because the other ones don't make sense, and because it is a scientific consensus. The latter because they only studied one, and imagine if they studied other ones...
Answer:
Im sorry if i late but the answer i believe is C. if i wrong let me know!