Which of these should be reportable diseases to protect public health? a: heart disease b: skin cancer c: hiv d: diabetes

Me with this i need to get the answer quickly.

Does indrect sunlight does not pose any danger to the skin

Insulin is a peptide therapeutic used to manage type 1 diabetes, which affects more than 20 million people worldwide according to the international diabetes federation. a significant limitation to the broad distribution and use of insulin to treat type 1 diabetes is the fact that it must be administered by injection rather than orally. why is insulin administered by injection and not orally?