Question

a longitudinal wave travels:
select one:
only along the earths longitudinal lines.
perpendicular to a latitude wave.
perpendicular to the direction of oscillations.
in the same direction as the oscillations.

Explanation:

A longitudinal wave is a type of wave where the particle displacement is parallel to the direction of wave propagation. This means the wave travels in the same direction as the oscillations of the particles in the medium. The first option about Earth's longitudinal lines is a misinterpretation of the term "longitudinal" in the wave - context. The second option about being perpendicular to a latitude wave is not relevant as it misdefines the wave - direction relationship. The third option (perpendicular to the direction of oscillations) is the characteristic of a transverse wave, not a longitudinal wave.

Answer:

In the same direction as the oscillations.