A & C Vitamin must be listed on food labels. Companies can voluntarily list other vitamins that are present in the food on the labels as well. When vitamins are added to the food, or when a vitamin claim is made, those nutrients must be listed on the label.

You could simply visit http://www.highbloodpressuremed.com/vitamins-for-high-blood-pressure.html for a website that has the vitamins listed. This should fufill your question.

At http://www.helpwithcooking.com/nutrition-information/vitamin-guide.html, there is a list of all of the vitamins you listed, their functions, and what foods they are prevalent in.

This depends on which specific vitamins you're deficient in. Different deficiencies may cause different undesirable health conditions. You'll find them listed in the article linked to in the "Sources and related links" section below. It also lists conditions related to mineral deficiencies.

Bulldogs have the same need in food as any other breed of dog. Mainly meats, some cereal, vitamins, as listed on most tins of dogfood.