Answer
(b)
Work Step by Step
The following are true about the normal microflora found in the urogenital system:
Females of childbearing age normally bear vaginal lactobacilli that produce an acidic pH that inhibits the growth of most other types of microbes; In males, except for the last third of the urethra, the genital tract lacks a normal microflora and is sterile; and In both sexes, all parts of the urinary tract are normally sterile except for the portion of the urethra nearest its opening.