An African butterfly species exists in two strikingly different color patterns Brightly colored male peacocks mate more frequently than drab ones do Most Swiss starlings produce four to five eggs in each clutch Fossil evidence indicates that horses have gradually increased in size over time The average birth weight for human babies is about 7.5lbs A certain species of snail exists as either of a cream colored or a solid brown color. Intermediate colors are rare. Pathogenic bacteria found in many hospitals are antibiotic resistant

A. directional selection
B. sexual selection
C. disruptive selection
D. stabilizing selection
E. random selection