2. what was mud used for in the oil drilling rig?

In geotechnical engineering, drilling fluid, also called drilling mud, is used to aid the drilling of boreholes into the earth.

Explanation:

Often used while drilling oil and natural gas wells and on exploration drilling rigs, drilling fluids are also used for much simpler boreholes, such as water wells.

sonar maybe? ? i dont know the choices

the big question intentionally left by halloween 2018 is whether michael myers is really dead or not. the last time we see him, michael is trapped in the cage just as laurie's house starts to burn. however, when the film cut back to the flames, the room appears empty.

explanation:

hope this and mark me as brainliest if you want.