**Educational Content: Understanding Vitamin D's Role in Calcium Utilization****Experiment Overview:**The body needs vitamin D to utilize calcium effectively. An experiment is designed to study the effects of calcium and vitamin D supplements on the bones of first-year college students. The primary focus of the study is the total body bone mineral content (TBBMC), which is a crucial measure of bone health.**Study Design:**- **Participants:** The study will include 60 students, consisting of 30 men and 30 women.- **Treatment Groups:** Students will be divided into groups that will receive different doses of calcium and vitamin D. - **Vitamin D Dosage:** - 0 IU (placebo) - 150 IU- **Calcium Dosage:** - 0 mg/day - 300 mg/day**Methodology:**All supplements will be provided in identical tablets to ensure that the subjects cannot distinguish between the different treatments. This design helps in maintaining the integrity of the experiment by minimizing potential biases.The students will receive the supplements over the course of the study to assess the impact of varying levels of vitamin D and calcium on their TBBMC. The data collected will provide insights into how these nutrients affect bone health in young adults.**Factors Considered:**The study accounts for potential influencing factors, ensuring a comprehensive analysis of the results. Further selections might be included to adjust for variables such as diet, physical activity, and genetic predispositions affecting bone density.This experiment aims to contribute valuable knowledge to the fields of nutrition and public health regarding optimal vitamin D and calcium intake for bone health in the young population. **Question 3**The body needs vitamin D in order to use calcium. An experiment is designed to study the effects of calcium and vitamin D supplements on the bones of first-year college students. The outcome measure is the total body bone mineral content (TBBMC), a measure of bone health. Two doses of calcium will be used: 0 and 300 milligrams per day (mg/day). The doses of vitamin D will be 0 and 150 international units (IU) per day. The calcium and no vitamin D will be given in a single tablet. All tablets, including those with no calcium and no vitamin D, will look identical. Subjects for the study will be 30 men and 30 women. There are [Select] factors and [Select] treatments in this design.

Vitamin D is a necessary vitamin that is acquired from sunlight. It is necessary for healthy bones and aids the body's utilization of calcium from the diet. It occurs naturally in fish, liver oils, egg yolk, and other foods. Vitamin D deficiency may result in cancer, cardiovascular disease, severe asthma in children, and other health problems.Answer: 2 factors 4 treatments Explanation: The factor is an independent variable here factors are Calcium and Vitamin D. Combinations of factor levels are called treatments. Here possible treatments are given below: Here are total four possible treatments (Vitamin D, Calcium)=(0,0),(0,300),(150,0),(150,300)