[Solved] How will the increase in the proportion of the population that is elderly impact the U.S. debt ratio in the next few decades? A) Rising numbers of elderly and shrinking real GDP will raise the debt ratio. B) Rising numbers of elderly and shrinking real GDP will lower the debt ratio. C) A falling proportion of the population that is working and rising transfer payment obligations will raise debt ratio. D) A falling proportion of the population that is working and rising transfer payment obligations will reduce debt ratio. Angiosperms: A large group of flowering plants whose seeds are enclosed within a fruit, comprising a vast majority of plant species. Gymnosperms: A group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes, characterized by having naked seeds not enclosed in an ovary. Naked Seeds: Seeds not enclosed in an ovary or fruit, typical of gymnosperms like pine trees. Conifers: A group of cone-bearing seed plants with vascular tissue, mostly evergreens, that includes pines, spruces, and firs.