Final answer:
In aviation, a daily inspection is valid for 24 hours, ensuring an aircraft is inspected at least once in every 24-hour cycle.
Step-by-step explanation:
The question relates to the validity period of a daily inspection for aviation operations. According to aviation regulations, a daily inspection is valid for a certain number of hours before it must be conducted again to ensure the continued airworthiness of the aircraft. When considering the options provided, the answer is that the maximum hours a daily inspection is valid for is 24 hours (Option B). This is based on standard aviation practice where each daily inspection covers a 24-hour period, ensuring that the aircraft is inspected at least once in every 24-hour cycle.