The peas were a good election because they grow fast and are easy to maintain. They also have a variety of visual characteristics that can vary, such as the shape of the seed, the color of the seed, the color of the flower, etc, and these characteristics had two possible values, for example, the color of the flower can be white or purple.
Taking this information into account, the correct option of the ones provided in the question is the first one: they grew quicly.
