Final answer:
Darrow and Sevro are the leaders of the tribes within House of Mars in the book series 'Red Rising' by Pierce Brown.
Step-by-step explanation:
The correct answer is b) Caesar and Pompey. The leaders of the tribes within the House of Mars are Darrow and Sevro. The question seems to refer to the book series 'Red Rising' by Pierce Brown, where the House of Mars is one of the factions within a hierarchical society on Mars. Darrow and Sevro are the leaders of the tribes within House of Mars in the book series 'Red Rising' by Pierce Brown. Darrow and Sevro are among the main characters and leaders of the tribes within the House of Mars.