Yooo answer i would say is B
-a substance found in foods (such as meat, milk, eggs, and beans) that is an important part of the human diet
-any of various naturally occurring extremely complex substances that consist of amino-acid residues joined by peptide bonds, contain the elements carbon, hydrogen, nitrogen, oxygen, usually sulfur, and occasionally other elements (as phosphorus or iron), and include many essential biological compounds (as enzymes, hormones, or antibodies)
Explanation:
Painful urination is a common sign of a urinary tract infection (UTI). A UTI can be the result of a bacterial infection. It can also be due to inflammation of the urinary tract. The urethra, bladder, ureters, and kidneys make up your urinary tract.
A. Geriatrics is the study of older people
Gynecology is the study of women's reproductive health
Obstetrics is the study of pregnancy and child birth
Pediatrics is the study of children