Question

which is an example of a public transportation system?
a. small rental vehicles or cars
b. private cars for commuting
c. pedestrian walkways and paths
d. trains and subway networks
what are geographic barriers?
a. tourist routes to rural towns
b. roadways between key cities
c. physical obstacles to travel
d. street grids and intersections

Explanation:

First Question (Public Transportation System)

To determine the public transportation system example, we analyze each option:

• Option a: Small rental vehicles are private or commercial rentals, not public transit.
• Option b: Private cars are personal, not public transportation.
• Option c: Pedestrian walkways are for walking, not a transportation system (vehicular or mass transit).
• Option d: Trains and subway networks are mass transit systems available for public use.

To identify geographic barriers, we analyze each option:

• Option a: Tourist routes are for travel, not barriers.
• Option b: Roadways facilitate travel, not act as barriers.
• Option c: Physical obstacles (like mountains, rivers) hinder travel, fitting the definition of geographic barriers.
• Option d: Street grids organize urban travel, not act as barriers.

Answer:

d. Trains and subway networks

Second Question (Geographic Barriers)