D. Space is incredibly large.
The best topic sentence for the paragraph would be: "Space is incredibly large." as it introduces the main idea that the vastness of space makes it challenging to conclusively determine the existence of life on other planets.
“Andrew ran through the hallway” is a prepositional phrase in the given sentence. Prepositions, their objects, and any words used to modify the objects make up a prepositional phrase.
A prepositional phrase usually modifies a verb or a noun. Adverbial and adjectival prepositional phrases are the two different types of prepositional phrases. A prepositional phrase has an object at the end and the preposition at the beginning.
In the given sentence, "This morning, Andrew ran through the hallway so that he could get to his classroom" there is only one prepositional phrase is “Andrew ran through the hallway.”
Learn more about prepositional phrase, here:
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b. The junk pile
c. beneath Jo's bed
d. is getting bigger
a. True
b. False
A statement we accept without proof is called a postulate. It is also known as an axiom. These are rules which are accepted to be true without any evidence that will prove these. For instance, the postulates in the kinetic molecular theory.
B. The ending
C. The order in which you present your ideas
D. The introduction
choosing and interesting subject?
a. she or he
b. his or her
c. themselves
d. himself or herself