<span>Another word for "platform" that would fit this concept would be "app" or "tool." These words would give the connotation of something that has utility and can be used for a positive end.</span>
The preposition in question is "on", and its purpose is to show you where the dog chewed. You can remove the preposition to form the sentence "The brown dog chewed the rawhide bone." You can also rearrange it to find the preposition, "on the rawhide bone, the dog chewed" in what is commonly known as the Yoda technique.
D. The first African American opera singer that permanently became a member of New York's Metropolitan Opera was Marian Anderson. She is a contralto who became one of the best singers during the 20th century. A lot of people say that she has a very rich voice indeed. She was also offered with various opportunities such as acting but declined the offer due to her lack of knowledge in the field of acting. She is also the inspiration of the many black artists that want to excel greatly despite if the racial discrimination that they experienced back then.
3. The third person point of view (the 'he' vs. 'I' in this passage) is voiced by an observer with limited omniscience.
In this case limited omniscience is shown by the fact that the narrator has feelings about what is occurring. An objective character would remain neutral describing events.
