What is a lancet window?
a.
another name for a stained glass window
b.
a tall narrow window with a pointed arch at the top
c.
a specific window in honor of Saint -Denis

I'm pretty sure the answer is B.  a tall narrow window with a pointed arch at the top (apologizes if it turns out to be wrong)

Explanation:

as much as I would like to, I'm really not that great at explaining things

answer; (binary). i believe this is the correct answer;

a. symbolism

b. opinions

all of them

c. hidden messages

d. political statements