This is science :) "Amber studied a graph of a mechanical wave. If she wanted to find out the wavelength, from which points should she measure"

1 to 5 would be your answer

“other instruments such as gravimeters and magnetometers are also used in the search for petroleum. extracting crude oil normally starts with drilling wells into an underground reservoir. when an oil well has been tapped, a geologist (known on the rig as the "mudlogger") will note its presence. “ this is what i found on google i hope it

The answer is a.  i hope this