Final answer:
In the mid-1960s, advancements in radio communication technology, including the use of communications satellites and wireless technologies, allowed EMS to greatly expand their service areas and improve the effectiveness of their emergency response. Option 1.
Step-by-step explanation:
Based on the provided excerpt, during the mid-1960s, Emergency Medical Services (EMS) experienced advancements due to new technology in radio communication. Such technological improvements, including communications satellites, and wireless technologies, enabled EMS to serve much larger regional areas.
This development in technology greatly enhanced the ability of EMS to communicate and respond to emergencies more effectively. The introduction of microwave transmission, for instance, played a crucial role in this transformation, allowing for clearer and more reliable communication that could span greater distances at a lower cost. However, there is not enough information to suggest that there were increases in traffic accident awareness leading to funding for medical equipment, opportunities for full college education for EMS workers, or increased funding for EMS worker wages during this specific time period.