The correct answer is Bravery. Here's why: The underlined word "fortitude" refers to courage or strength, especially in difficulty. "Resilience" means the ability to recover quickly from setbacks or challenges. Combining these, the context implies that the soldiers demonstrated courage and determination in adversity. Among the options provided, Bravery best captures this meaning. Thus, the best word that expresses the meaning of "fortitude and resilience" is Bravery.