Final answer:
Christopher Columbus and Ferdinand Magellan are the two explorers who never entered Texas, as Columbus only reached the Caribbean and Magellan was killed in the Philippines and never made it to North America.
Step-by-step explanation:
The two explorers who never entered Texas are Christopher Columbus and Ferdinand Magellan(A). Columbus is known for his voyages financed by the Spanish monarchs Isabella I of Castille and Ferdinand II of Aragon. He landed in the Caribbean in 1492, mistaking it for the Indies, and never explored the mainland of North America. Meanwhile, Ferdinand Magellan left Spain in 1519 and became the first explorer to sail into the Pacific Ocean via the southern tip of South America, but he was killed in the Philippines and never reached Texas. On the other hand, Hernán Cortés conquered the Aztec Empire in Mexico and Francisco Pizarro conquered the Inca Empire in Peru (B), both of which required travels in proximity to Texas. Jacques Cartier and Samuel de Champlain were French explorers involved in the exploration of Canada (C), and Lewis and Clark are famous for their expedition through the western United States, which did not include Texas (D).