Plz help me out am about to be done ..It’s about PE

Who is on the senate intelligence committee?

The pka of three different c―h bonds is given below. explain the observed trend in pka. select the single best answer.

Science cannot describe things that a.) are beyond imagination, experience, or human ability b.) cannot be observed, measured, or tested c.) have not been conclusively proven d.) occur without being seen, heard, or felt