The answer is letter B, etymology.
<span> Etymology refers to the way in which origins of words are
traced back. Words change their meanings
through the course of time, this is why learning its history and its lineage is
important in the process of etymology. Language,
just like our physical bodies, evolves through time and they may sometimes
depend on the historical events that occur within specific areas. People adapt
to these events and coin words based on their experiences. </span>
