Select the correct text in the passage.
Which sentence best develops the idea that the Spanish were motivated to test a material different from wood?
(4) Although found in very few places in the world, conditions were just right for coquina formation along the east coast of
Florida. The Spanish knew about this rock, and while they might have picked up loose chunks, the people of St. Augustine were
primarily soldiers, not stonemasons, and so this rock sat mostly unused and unappreciated for years. Wood was more plentiful,
at first, and easier to work with. But then the British, settling to the north, edged into the Carolinas. Spanish Florida was only a
short sail away. Something more than a wooden fort was needed to protect St. Augustine and to keep the British from taking
over Florida...