Explanation:

Introduction:
When someone meets with an accident during travel, it is essential to provide appropriate first aid to ensure their safety and well-being. In the given scenario, the person met with an accident while traveling from Delhi to Patna by bus. Let's discuss the correct option for providing first aid in this situation.

Option (a): Apply antiseptic lotion and bandage to the injured parts:
This option suggests applying antiseptic lotion and bandaging the injured parts. While this may be a suitable first aid measure for minor injuries, it might not be sufficient for a major accident. Applying antiseptic lotion and bandages may not address potential internal injuries or fractures that the person might have sustained. Therefore, this option alone may not be the most appropriate course of action.

Option (b): It's a major accident, take him straight away to the nearest hospital:
This option suggests taking the injured person directly to the nearest hospital. This is the correct course of action for a major accident. In such situations, it is crucial to prioritize the person's well-being and ensure they receive immediate medical attention. Hospitals are equipped with the necessary facilities, healthcare professionals, and diagnostic tools to assess and treat the person's injuries effectively. Prompt medical intervention can help prevent further complications and ensure the best possible care for the injured individual.

Option (c): Both (a) and (b):
This option suggests that both applying antiseptic lotion and bandaging the injured parts and taking the person to the nearest hospital are appropriate first aid measures. While applying antiseptic lotion and bandaging might provide temporary relief and prevent infection, it is still essential to seek medical attention in the case of a major accident. Therefore, this option combines both measures to ensure immediate first aid and subsequent medical evaluation and treatment.

Option (d): None of these:
This option suggests that none of the given options are correct. However, considering the severity of the accident, it is necessary to seek medical attention promptly. Therefore, this option is incorrect.

Conclusion:
In conclusion, when someone meets with an accident during travel, especially in the case of a major accident, it is crucial to take them straight away to the nearest hospital for proper medical evaluation and treatment. While applying antiseptic lotion and bandaging might be suitable for minor injuries, it is not sufficient for a major accident. Prioritizing the injured person's well-being and ensuring they receive immediate medical attention is of utmost importance in such situations.