Answer:
B: They all died fighting in Cuba.
Step-by-step explanation:
The Rough Riders was a cavalry led by Theodore Roosevelt which was officially called "First U.S. Volunteer Cavalry". This group of soldiers were renamed "The Rough Riders" by Colonel Roosevelt after the cavalry came under his command.
The Rough Riders were fighters who rode on horses and led by Theodore Roosevelt. Moreover, they also trained at a Tampa hotel while on their way to join in the Spanish-American war. The statement that they all died while fighting in Cuba is false.
Thus, the correct answer is option B.