Answer:
(B) The idea wasn't invented until 1935.
Explanation:
The best answer would be (B), since prior to that year, all movies were silent ones. Silent movies are movies without any sound, which started since the late 19th century until they early 20th century.
Though by 1927 movies were already released with sounds, such as the musical The Jazz Singer, none were composed specifically for each movie.
WIth Max Steiner's film score for King Kong, the trend starts, however. King Kong was released in 1933, and after the release more movies had their own film scores. 1935 was also the year when Academy Awards started giving awards for Best Original Film Score.
Yes it's true, but that doesn't last very long. It creates a compression of the molecules during exactly half of each vibe, and during the other half, it leans the other way, and the molecules spread out in what's called a "rarefaction" a region of lower-than-normal pressure. This 'train' of compressions and rarefactions is what travels through the air, away from the vibrating object, and it's what some people often call a "sound wave".
A or d. I feel like it leans more toward d, since it's about the architecture of the building.
Mozart's Requiem was played at the funeral