A scientist proposes that a certain species of bacteria has an unusually high rate of evolutionary change, allowing them to develop new adaptations relatively quickly. Which observation about the bacteria would most strongly support the scientist's proposal?

This indicates that - The bacteria have a high rate of mutation.

Explanation:

From the given information we know that -

The bacteria possess a high rate of evolutionary change. They can adapt to new environments very quickly.

This features only indicates that -

The bacteria have a high rate of mutation property and capacity. Only this property can enhance the evolutionary rate and adaptation rate.