Final answer:
“M” by Fritz Lang is not adequately described by any of the provided options, as it was not his first feature, not known for visual effects, not the most expensive, nor an Oscar winner. The first successful talking motion picture in 1927 was 'The Jazz Singer'.
Step-by-step explanation:
“M” by Fritz Lang could be considered the first feature film of Fritz Lang, the best visual effects movie of all time, the most expensive movie in the 1930s, or the first German movie to win an Oscar.
However, none of these options accurately describes Fritz Lang's “M”. Fritz Lang had already directed several movies before “M,” such as the greatly influential “Metropolis” in 1927, so it was not his first feature film.
“M”, released in 1931, is a significant work in film history but is not noted specifically for its visual effects nor recognized as the most expensive movie of the 1930s.
Lastly, “M” did not win an Oscar, as the first German film to win one was much later. The question is not specific enough to select one of the provided options definitively.
To answer another film-related question, the first successful talking motion picture released in 1927 was “The Jazz Singer” (Option C), which was a major milestone in film history, signaling the end of the silent movie era and the rise of “talkies”.