2 periods
1 period
1\(\frac{1}{2}\) periods
1\(\frac{1}{4}\) periods
Explanation
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from crest (the highest point of the wave or peak) to trouph(opposite of crest) is one ocillation, this happend twice so 2 occilations, 1 occilation = 1second, 2 occilation = 2 seconds.
Time = 2secs

the amswer is C, even myschool ai confirmed it, send a meassage to emmanuelakintola007@outlook.com for many more errors in your app and ideas and features that can make it better and stand out among your competitiors as I am a professional UI/UX Designer.

We have two halves cycles=1/2 + 1/2 =1sec
Also, we have two quarters of cycle= 1/4 + 1/4 = 1/2 sec
Total periods = 11/2 ( 0ne and half)

why no explanation
when we need u won't give
but when we don't need u will now give
nawa for u my school u dey f**k up ooo





