1. The Second Great Awakening was a reaction to the of the end of the 18th
century.
a. evangelical movement
b. Protestant Reformation
c. revival
d. secularism

What the heck don’t understand

Period is the time it takes for one “cycle” to complete. in the parent sine function, period is 2*pi since sin(0) = 0, sin(pi/2) = 1, sin(pi) = 0, sin(3pi/2) = -1, and sin(2pi) = 0. at that point, the sequence repeats itself. i’m not sure if your graph is similar to the sine function since you didn’t provide a picture, but you can find the period by looking at a graph.