Vitamin C.
Carrots are a very good source of vitamin A!
Carotene is a good source of vitamin A, according to Switched-On-Schoolhouse (which a homeschooling disk I use).
Vitiman A is good for you
Milk is a good source of vitamin D.
No.
The sun
Oranges are a good source of vitamin C.
Yes lemons are a good source of vitaminc
There is no known good natural source of vitamin D other than exposure to sunlight. If needed, there are always Vitamin D supplements, however these aren't as efficiently absorbed compared to the natural source.
Carrots are rich in vitamin A and are a good source of vitamins C & K
Vitamin C.
yes