I've answerd the same question here: brainly.com/question/8960759
" m | | n" means they are paralell, like the lines between m and n
" n ⊥ p" means they are perpendicular, like the lines between n and p
it would help to draw a picture
draw any 2 paralell lines and call them m and n
then draw a line perpendicular to n and call it p
you then get the drawing below
so therfor p is perpendicular to m
so pick the option "m ⊥ p"
