Answer:
D. Uranium-238
Explanation:
Explanation: Uranium- 238 is an unstable isotope of uranium. It is one of the most effective isotope used for radioactive dating in order to determine the age of a rock that is about billions of years old.
True :)))))))))))) *657&++=7=6&&54&&*
The correct answer is Selective Attention.
Selective attention refers to the psychological procedure in which an individual takes care of one or a couple of tangible information sources while disregarding alternate ones. In the given situation, Bethany focused on the conversation across the room, due to the reason that she heard her name being talked about, wherein she blocked all of what she is hearing and focused on the conversation across the hall, this cognitive process called selective attention.