The correct option is C Religious warfare due to the Reformation had consumed the Crown's resource and military.
Much of the 16th century found the British monarchy of both Henry VIII and his daughter, Elizabeth I consumed in religious warfare, a major distraction for the nation. The British victory against the Spanish Armada in 1588, a feat due to both strengthening of the British navy and a weakening of the Spanish, enabled the English, under Sir Walter Raleigh, to successfully explore the North American continent.