Final answer:
The boy in "Sunrise on the Veld" feels in control due to a heightened sense of personal power and freedom, exemplified by his acute sensory perception and connection to his environment.
Step-by-step explanation:
The boy in the story "Sunrise on the Veld" feels he has control over his world at the beginning because of a strong sense of personal power and freedom. This sense of control is illustrated when he acknowledges his physical and sensory prowess, as observed in the passage where his heightened senses allow him to perceive the world in vivid detail. An example of this is when he notes the prismatic colors in all the dewdrops upon a million blades of grass, showcasing an acute awareness and connection to the environment around him.