Fos·sil<span>ˈfäsəl/</span>nounthe remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
so B
The answer is 2) 12 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
The spinal cord is made up of bundles of nerve fibers.
<h3>option A is the correct one </h3>
hope this helps you out
Correct one should be
<span>osmosis.</span>
