In what year of its life cycle does a biennial weed generally flower?

Biennial weeds typically complete their life cycle over two growing seasons. During the first year, they primarily focus on vegetative growth, establishing their root systems and foliage. It is in the second year that they flower, produce seeds, and complete their reproductive phase before dying. This flowering in the second year is a distinctive characteristic of biennial plants, which distinguishes them from annuals, which flower in their first year, and perennials, which may flower over multiple years. The other options do not accurately capture the typical life cycle of biennials, highlighting that their flowering occurs specifically in the second year.