The correct answer is D. A prepositional phrase means that it starts with a preposition. And in these examples, D is the only one that starts with a preposition "on".
It depends on what type of plastics we're dealing with.
Let's take plastic bags for instance:
The advantages of plastics: It is durable, low cost, water resistant, lesser energy and heavy chemicals requirements in manufacture and are light weight. Many studies comparing plastic versus paper for shopping bags show that plastic bags have less net environmental effect than paper bags, requiring less energy to produce, transport and recycle; however these studies also note that recycling rates for plastic are significantly lower than for paper.Plastic carrier bags can be reused as trash bags or bin bags. Also, plastic bags are complimentary in many locations but are charged or "taxed" in others.
The disadvantages of plastics: Plastics bags are make of a non-renewable resource, which gives us more reasons to use recyclable shopping bags. Plastic bags are also flimsy and do not sit as well as either paper or cloth. They are a hazard to wildlife animals, if they are not disposed properly. Lastly, plastic bags clogs roadside drains, which could cause the flooding of the street at heavy rainfalls.
1. Convey a lot of information quickly
2. Add layers of meaning to a text
3. Bring out specific feelings and emotions
Hope that helped :)
The only incorrect answer is d. Scan external files from only unverifiable sources before uploading to computer
While it is true that you should scan files before uploading them to your computer or, as a matter of fact, any device in general, it is not true that you should scan files that come only from unverifiable sources. All sources that have contact with your computer should be scanned because you can not be sure that even the most verified sources are not infected.
