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.
<span>This discovery activity puts students in the place of real volcanologists by giving them access to real-time data from Kilauea Volcano, Hawaii. They learn about volcano monitoring techniques, study case histories of important volcanic processes, and then form and test hypotheses for past and future volcanic events with multiple instruments and real-time data. As a result, students will understand the processes that shape a basaltic shield volcano.</span>
Answer:
probably because when you get money your happy because you can buy things
Explanation: