Answer:
Step-by-step explanation:
The speaker uses chronological order in this passage to present a historical sequence of events, starting from the beginning of the space race between the US and the Soviet Union and highlighting key milestones achieved by each country. The purpose of using chronological order is to provide a clear and organized timeline of events, which helps readers understand the context and significance of each development.
While the passage does mention the concerns of government officials and President Kennedy's pledge to put a man on the moon, these are not the primary reasons for using chronological order. Instead, the chronological order is used to highlight the different achievements and milestones of the US and Soviet space programs and how they compared to each other.