Ce directeur général entêté ne veut ni céder ni démissionner. Il n en faut pas plus pour que le personnel inquiet de l avenir qui les attend pensent sérieusement à signer une pétition. Ou placer les virgules

chemical weathering

explanation:

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

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