Which part of the flower holds the organs at the base of the flower?

The receptacle is the thickened part of the stem that supports the flower and holds the floral organs at its base. It serves as the point of attachment for the sepals, petals, stamens, and carpels, effectively providing structural support. This ensures that the reproductive organs are positioned correctly to facilitate pollination and reproduction.

The ovary, on the other hand, is part of the female reproductive structure and is involved in developing the seeds after fertilization. The pedicel is the stalk that connects the flower to the main stem, but it does not hold the organs themselves. The style is a slender structure that connects the stigma (the receiving part of the pistil) to the ovary but is not responsible for holding the organs at the base of the flower. Thus, the role of the receptacle as a supportive base for all floral organs clearly establishes it as the correct choice.