Question

we can combat noise pollution in a variety of ways. some examples of this are designing buildings that can absorb sound and well - planned landscapes. what is another way we can combat noise pollution? removing all trees walls along freeways

Explanation:

To combat noise pollution, we need methods that reduce or block sound. Removing all trees would likely increase noise (as trees can absorb sound), while walls along freeways (noise barriers) are a known method to block traffic noise from reaching nearby areas, aligning with the goal of combating noise pollution like the given examples (sound - absorbing buildings, planned landscapes).

Answer:

B. Walls along freeways