The development of highways and expressways aims to improve:

Connectivity between cities
Travel speed
Safety standards
All of the above

The correct answer is: All of the above.

Highways and expressways are important infrastructure that connect cities and towns, improve travel speed, and increase safety standards.

  • Connectivity between cities: Highways and expressways connect cities and towns, making it easier for people to travel between them. This can improve trade and commerce, as well as social and cultural interactions.
  • Travel speed: Highways and expressways are designed to be high-speed roads. This can help to reduce travel times, making it easier for people to get to their destinations.
  • Safety standards: Highways and expressways are typically built to high safety standards. This includes features such as guardrails, medians, and lighting. These features can help to prevent accidents and injuries.

In conclusion, the development of highways and expressways aims to improve connectivity between cities, travel speed, and safety standards.