The list of choices you provided with your question
is utterly devoid of any such examples.
You will need to turn this into scientific notation, so:
1.176 × 10^1 cm^2
To two significant figures means to two digits so since 7 is greater than 5, you will need to round up.
Final answer is:
1.2×10^1 cm^2
Trueeeeeee
The frequency of a wave remains constant if the medium, temperature, and pressure do not change.