Which type of equipment is commonly used in highway construction?

The selection of excavators, bulldozers, and asphalt pavers as commonly used equipment in highway construction reflects the essential roles these machines play in the various phases of building and maintaining roadways.

Excavators are critical for earth moving tasks, including digging trenches for utility installation or preparing the ground for foundational work. Their ability to maneuver in tight spaces and perform precise digging makes them indispensable for highway projects.

Bulldozers serve a different yet equally vital purpose; they are primarily used for moving large quantities of earth, grading surfaces, and clearing paths. Their heavy-duty blades enable operators to push or spread materials efficiently, which is crucial for creating the proper foundation for highways.

Asphalt pavers are specifically designed for applying a smooth layer of asphalt during the road surface construction process. They ensure even distribution and compaction of asphalt mixtures, which is key to the durability and safety of the finished roadway.

In summary, this combination of equipment is pivotal for the foundational, grading, and surface application processes required in highway construction, making option B the most appropriate choice.