Final answer:
The statement that Clara Schumann wrote successful musical works in her teens is true. She was a recognized child prodigy who by the age of 16 had composed piano pieces that received positive acclaim.
Step-by-step explanation:
Clara Schumann was indeed a prodigious composer and pianist who wrote successful musical works while still in her teens. This statement is true. Born in 1819, Clara was recognized as a child prodigy and had composed a series of piano pieces by the age of 16, which were well-received. She continued to compose and perform throughout her life, balancing her professional career with her personal life, which was notable during a time when women faced significant societal constraints. Her legacy includes not just her compositions, but also her impact as a pianist and inspiration for other women in music.