Which underlined word in the sentence is a general article?

the paint should be dry in an hour.

a.
hour

b.
dry

c.
the

d.
an

(05.02)on a boat, a cabin's window is in the shape of an isosceles trapezoid, as shown below. what is the area of the window? using what you know about the words "decompose," "descent," and "deport," the prefix "de" means