1. an early sign of vitamin a deficiency is: a. keratinization. b. hypervitaminosis a. c. carotenemia. d. night blindness. e. infectious diseases.

D. Night blindness

Explanation:

When vitamin A is reduced, it comes to night blindness.

Night blindness manifests through a discreased ability to see at night or in the dark.  

The time for your eyes to adjust to the dark increases. Over time, you lose the ability to see at night.

depression is an ongoing sadness\lack of motivation. you feel and feel like its never going to get better. you're so sad to the point you think of death.

anxiety is an ongoing feeling of paranoia\ feeling like everyone is watching you and making fun of you. you get nervous easily and feel like the room is spinning.  

yes, they cause death every year. its a long, exhausting battle. only few make it through as sad as it sounds.

explanation:

the members of alcoholic anonymous aren't required to disclose their last names.