Answer:
You have to start creating a portfolio and reach out to agencies and submit your work. Once you do start modeling this adds to your credintials and will help you find better work and agencies. Please do be careful to the people and companies you reach out. It's best to go through the process with someone you know who works in the modeling industry or simply your parents. As to what teen modeling agency is the best, it depends on where you live.
From the description of the food that the doctor is advising Natalia to start consuming, it is clear that she is suffering from (C) Vitamin D deficiency.
Someone with a vitamin D deficiency would be at risk of rickets, an illness where someone will have skeletal deformities due to soft bones. Increased risk of death due to cardiovascular disease and cancer is also associated with someone who has a vitamin D deficiency.
B . Push blood from the vertices to the arteries , and ventricles push blood from the veins to the atria