Correct option is D
All the options listed are recommended practices to prevent transmission of various types of hepatitis (A, B, and C). Explanation of options:
· (a) ✔ Prevents fecal-oral transmission.
· (b) ✔ Prevents blood-borne infections.
· (c) ✔ Effective for surface disinfection.
· (d) ✔ Correct; combined methods are best.