Final answer:
Mozart's comic operas are relevant beyond the time they were written due to their universal themes and musical genius, unlike the progressive approaches of Berlioz, Strauss, and Wagner, which directly challenged their contemporary audiences.
Step-by-step explanation:
The statement that Mozart's comic operas are only relevant to the time in which they were written is false. Mozart's operas, including his comic ones, continue to be celebrated and performed today because of their universal themes, brilliant music, and the depth of their characters. These operas transcend the specific time period in which they were written and address aspects of the human condition that remain relevant. In contrast to Mozart's classic approach, other composers such as Berlioz, Strauss, and Wagner were known for being progressives in music, often challenging their audiences with new and innovative compositions.