I believe it’s C lmk if I’m right or wrong plz :)
There is no law saying you have to pay them much and they will work for any wage
The correct answer is - days or years before the major earthquake.
The foreshocks always come before the major earthquake. They can appear only a single day before it, weeks, months, or even years. It is a nice indicator that something bigger is coming, so if people are wary enough they can avoid the devastating effects of the major seismic activity afterwards.
For example, we can take the foreshocks and the major earthquake in Ohrid, Republic of Macedonia, in the summer of 2016, where the foreshocks started about two months earlier, and they were present every day for those two months, slightly increasing in intensity, until the major earthquake of 6.9 magnitude according to the Richter scale came.
Hot spots are the phenomenon that can only explain the presence of volcanoes in the middle of the Pacific Ocean. Volcanic regions have hot spots that are coming from the mantle of the Earth that is hot compared to its surrounding mantle.
I visited a small beach in Long Island once, a garden variety one except less crowded and with pebbles in the sand. The beach was half a mile long, occupied by maybe two hundred people. Most were sunbathers but there were also many families with kids playing in the sand. One particuar family of 6 had a giant tent. We were there at 4PM so the sun shone less power UV rays, fortunate for us, unfortunate for the sunbathers. I decided grab the proper tools and construct a mini sand fortress that could withstand the waves. After several failed attempts I finally made a fortress large enough and built quick enough to be built before a big wave destroyed it. Fortress is an exaggeration, it was just several reinforced walls made with an ideal sand to water ratio. Some young children were watching my "fortess" in awe, made sense because their little sand castles paled in comparison to my design. I would bet you a hundred dollars that one of them took over my wavebreaker after I left, it's a practice commonly used on beaches. Once at a crowded beach I made a absolutley MAMMOTH series of walls and pits, after withstanding waves became too easy I built a castle behind it. It took 4 hours total. A few others started copying me so I spoke to a kid building a rather large castle near mine so we agreed to construct a wall or two connecting the two complexes. Then I had to leave so I gave it to him.