Recognize a relative clause when you see one. A relative clause—also called an adjective or adjectival clause—will meet three requirements. First, it will contain a subject and verb. Next, it will begin with a relative pronoun [who, whom, whose, that, or which] or a relative adverb [when, where, or why].
C) When traveling in space, astronauts weigh less because of a lack of gravity.
Answer:
Progressive implies something that is happening in stages, while Advanced implies that the stage has moved forward to a large extent.
Explanation:
Progressive and advanced are both adjectives used to describe the stages of an event or activity. Progressive implies continuity or the ongoing state of the activity. It also connotes the idea of something that is meeting up to current trends. For example, the old Professor has progressive knowledge of Information Technology. Advanced refers to the fact that the activity has progressed to a far stage.
Progressive: The ailment is progressive.
Advanced: The ailment is advanced.