How do s and p waves move through a solid material?

a. s waves move faster than p waves through solids.
b. p and s waves both travel slowly through solids.
c. p waves move quickly and s waves move slowly through solids.
d. neither p nor s waves are able to move through solids.

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.