Biology

The most likely answer is: A.It had too little biodiversity.

When a plant population, such as the nursery's tomato plants, consists of only one type of tomato (i.e., it lacks genetic diversity), it becomes highly vulnerable to diseases or pests that can target that particular variety. If the entire population has the same genetic makeup, the plants are all equally susceptible to the same disease. A lack of genetic diversity means that the population has no variation in disease resistance, so when a pathogen strikes, all individuals are at risk.

In contra...