I Believe it is C, Noun clause
In physics, intensity is described as the power transferred per unit area and its unit in the SI is watt per square metre (W/m<span>2</span>). As a result of that, any increase in distance from the originating source of energy, or in this case, a source of light, would decrease the intensity of the object. The shorter the sitting distance is, the brighter the light source would appear and at the same time, as the sitting distance becomes longer, the light source would appear to be of lower brightness.
It would most likely be D.
The type of sentence for the sentence “When night fell, she
went out to look at the stars.” is complex.
To add, a complex sentence contains an independent
clause and at least one dependent clause. An independent clause can stand alone
as a sentence and makes a complete thought and a dependent clause
cannot stand alone, even though it has a subject and a verb.