Final answer:
Direct contact transmission of infection occurs when pathogens spread through physical contact such as skin-to-skin contact. Touching an infected wound is an example of this mode of transmission.
Step-by-step explanation:
The direct contact mode of transmission of infection involves a scenario where pathogens spread from an infected individual to a new host through direct physical contact. This can include skin-to-skin contact, such as touching an infected wound. Therefore, the correct answer is A. touching an infected wound. Sneezing and coughing represent modes of airborne transmission, and contacting soiled bed linens would typically be classified as indirect contact via a contaminated object or fomite.