Question

complete the sentence with the word that best fits the overall meaning and tone. traffic ____________ on national highways during rush hours costs commuters billions of dollars each year by wasting time and fuel and causing higher transportation costs. interference congestion

Explanation:

"Traffic congestion" is a common term referring to heavy traffic that causes delays. "Interference" means disruption but is not the typical term for traffic jams. The sentence describes the negative impacts (wasting time/fuel, higher costs) which align with traffic congestion.

Answer:

congestion