Question

select the correct answer.
which word best completes this statement?
viajar en _____________ es lo más económico.
a. bus
b. auto
c. avión
d. tren
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Explanation:

To determine the most economical way to travel among the options (bus, car, plane, train), we consider common knowledge about transportation costs. Buses are generally the most economical (cheapest) option for travel compared to cars (which involve fuel, maintenance, etc.), planes (higher fares), and trains (often more expensive than buses for many routes). So "bus" (option A) is the best choice to complete the sentence "Viajar en __ es lo más económico" (Traveling by __ is the most economical).

Answer:

A. bus