Final answer:
The appropriate method to collect a urine specimen from an infant is to collect a random specimen in a clean diaper.
Step-by-step explanation:
The appropriate method to collect a urine specimen from an infant is b) Collect a random specimen in a clean diaper.
Collecting a random urine specimen in a clean diaper is the most suitable method for infants. This method is non-invasive and allows for easy collection of the specimen as the urine is collected directly from the diaper.
Other methods such as using a sterile container to collect a midstream specimen or placing a plastic bag over the genital area may not be appropriate or feasible for infants.