Read the following paragraph from five hours to sima.
After the cacophony of screeching brakes and grinding gears, there followed the comparatively static hum of engines...then the lesser ones began to 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 describes the mood created by these sentences?
building tension
growing anger
mounting suspense
heightened anxiety