Red blood cells are placed into a solution of unknown solute concentration. After an hour they have all burst open. The BEST explanation is that the solution

Hypotonic

Explanation:

the solution is of lower concentration compared to that of blood cells

the answer is c. it will give up it's valence electron to the other atom.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.