The Increasing Concentration of Atmospheric Oxygen in Earth's Early Atmosphere

Multiple Choice

The increasing concentration of atmospheric oxygen in Earth's early atmosphere

A) was favorable to most prokaryotes because of their small size.
B) was fatal to numerous eukaryotes because they possessed mitochondria
C) conferred a selective advantage to a eukaryote that possessed a mitochondrion.
D) conferred a selective advantage to a eukaryote that possessed a chloroplast.
E) conferred a selective advantage to prokaryotes because of their stiff membranes.