Read the following paragraphs: When our air conditioner broke in the middle of a hot summer, we had to fall back on some old-fashioned tricks to keep cool. At night, we opened all the doors and windows and set up fans to pull the colder night air into the house. When the sun came up, we pulled down the window shades to block the heat. As it got warm in the house, we put a tub of ice water in front of each fan to blow a chilled breeze through the darkened rooms. The key idea in this essay is staying comfortable without air conditioning. Which words or phrases below are used as pattern transitions to connect the paragraphs to that idea?

a.house
b.window
c.air
d.cool, colder, chilled​