Read the following paragraph from "Five Hours to Simla."

After the cacophony of screeching brakes and grinding gears, there followed the
comparatively static hum of engines, and drivers waited in exasperation for the next
lurch forwards. For the moment there was a lull, curious on that highway. Then the
waiting very quickly began to fray at the edges. The sun was beating on the metal of the
vehicles, and the road lay flattened across the parched plain, with no trees to screen
it from the sun. First one car horn began to honk, then a bicycle rickshaw began to clang
its bell, then a truck blared its musical horn, and then the lesser ones began to go pom-
pom, pom-pom almost in harmony, and suddenly, out of the centre of all that noise, a
long, piercing wail emerged.
Which words best describe the mood created by these sentences?
(1 point)

growing anger

building tension

heightened anxiety

mounting suspense

building tension