D is the answer to your question!
Wind turbines can be classified by their mechanical power control, and further divided by their speed control. All turbine blades convert the motion of air across the air- foils to torque, and then regulate that torque in an attempt to capture as much energy as possible, yet prevent damage.
As a result of humans eating junk food, our bodies can not contain all of the nasty chemicals that we consume through these foods. A reason for this being is because junk food is made up of chemicals that are used to make the food taste more appealing to us so that we can buy and eat it. As a result of us consuming these foods, we are putting so many bad things into our bodies which leads to us being sick more often. Since so much junk food is being consumed over time, it is leading to a major incline in the obese group. Because of this, another reason why junk food is unhealthy is because it leads to so many health issues such as obesity and cancers. Consequently, more and more people are dying from all of these issues which is a growing problem that many need to be aware of.
The answer is: most famous feature.
An adverbial phrase can contain one or more words which function as an adverb, being the adverb the head word of the phrase. Thus, they modify an adjective, a verb or another adverb. In the example sentence, the word most is the adverb, which means to the greatest extent.
The phrase "its ring system" is a noun phrase, "of ice particles" is a prepositional phrase, and "that is made" is a defining relative clause.
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