Final answer:
Bolivia plays its World Cup qualifying games at Hernando Siles Stadium in La Paz due to the elevation advantage, as the high altitude offers a significant home-field advantage against teams not acclimatized to such conditions.
Step-by-step explanation:
During the World Cup qualifiers, Bolivia plays its home games at Hernando Siles Stadium in La Paz primarily for the elevation advantage. This stadium is one of the highest professional stadiums in the world, located at an elevation of about 3,637 meters (11,932 feet) above sea level. Teams that are not acclimatized to such high altitudes often face difficulties in terms of physical performance and endurance, which tends to give the Bolivian national team a significant advantage when playing at home. This participation in sports is conditioned by topography and is a clear example of how geographic elements can influence sports. Bolivia's decision to play in La Paz is a strategic one, rooted in the physical geography of the region.