What most likely caused the different types of plants in the greenhouse to have different traits?

The most likely cause for the different types of plants in the greenhouse to have different traits is genetic variation and environmental factors. Genetic variation occurs due to the differences in genes and alleles passed down from parent plants through reproduction, leading to different traits in the offspring. Environmental factors such as differences in light, temperature, humidity, soil composition, and nutrient availability can also affect the expression of these traits and cause variations among plants within the greenhouse.