The correct response is:
The seismic waves will travel outward at the same speed in all directions.
This statement is true because seismic waves typically propagate outward from the epicenter of the earthquake in all directions, although their speed can vary depending on the type of seismic wave and the nature of the medium they are traveling through. However, they do travel outward in a spherical manner from the point of origin (the epicenter). The other options provided are not necessarily true for all observers.