Clauses highly improve sentence structures. They can make the sentence sound a lot better to the tongue, and it even make the sentence easier to understand. I hope this helps! :)
Geology is an earth science that studies particularly everything pertaining to the composition of the Earth, its ground, soil, water, rocks, anything that is pertaining to the characteristics of the Earth, and sometimes other planets. There are many tasks that geologists perform, but in a nutshell, they work mostly with governments, educational institutions such as universities, and most particularly the construction, oil, gas and mineral industries, studying the composition of the ground and other components of the earth, to establish the possiblity of mineral, oil and gas presence, the usefulness of a terrain for safe construction and also to build models that foretell possible natural disasters like earthquakes, and others. These are just a few of the many jobs performed by geologists, but two specific ones are: A: prepares scaled drawings of construction sites for clients, as they are the ones who, with mathematical models and earth-structure study, can tell if something can be built or not in a terrain, and C: Investigates the formation process of rocks, as this is basically the backbone of geology, the study of the composites of the earth.
yes you have the explanation and everything correct as to why C would be the correct answer.
The real meaning of euphemism friendly fire is term in military bases means accidentally attacking your own military unit hope this helps :)
Their performance varies considerable, they are often idle, and then might have an occasional flurry of activity. For example, if their attendance is sporadic, they may have good attendance for a while, and then disappear unpredictably from time to time.