What gesture did Shell make towards Dahl when he decided to leave for the war?

The correct answer highlights that Shell recognized and respected Dahl's decision to leave for service in the war by allowing him to leave with their blessing while still continuing to pay his salary. This gesture reflects the company's appreciation for his contributions and their understanding of the importance of his commitment to serve his country. Such support can foster loyalty and goodwill, demonstrating how businesses can support their employees in significant life choices, especially during times of conflict.

The other options do not capture this spirit of support and respect. Providing a new aircraft, stopping his salary, or giving a bonus for bravery conveys a different tone and intention that does not align with Shell's supportive gesture. By continuing Dahl's salary, Shell signified their encouragement for his brave choice.