Why does Jackie Robinson feels uneasy about opening day of the world series

Jackie Robinson's worst struggle was inclusion. Due to the segregation that existed in the United States during the time of his debut, Robinson faced racial taunts from fans, opponents, and some teammates, even though he had just as much a right to be on the baseball field.

i believe the answer is inference

specific audience will understand the main ideas. for example, if you were writing an instruction manual for rocket scientists, it would likely look very different from one you would write for young children. your language, tone, and writing style would change significantly.