Which best describes the life cycle of a biennial plant?

Biennial plants are characterized by their unique life cycle, which unfolds over two growing seasons. In the first season, biennials typically focus on vegetative growth, developing roots, stems, and leaves. This phase allows the plant to establish itself and store energy for the subsequent reproduction phase. During the second growing season, biennials utilize the stored energy to flower, produce seeds, and complete their life cycle. The completion of both vegetative growth and reproduction within these two growing seasons is what distinctly defines them from annual and perennial plants, thus making the chosen answer correct.

Other options do not accurately represent the life cycle of biennial plants, as some suggest completion in just one growing season or imply a longer time frame or indefinite lifespan, which does not align with the specific growth patterns of biennials.