Joseph Haydn's String Quartet in C Major, op. 76, no. 3, is composed for which of the following?

Joseph Haydn's String Quartet in C Major, op. 76, no. 3, is indeed composed for a string quartet, which traditionally consists of two violins, a viola, and a cello. This configuration allows for a rich textural interplay among the instruments, enabling them to engage in dialogue and contrast while maintaining harmonic support.

String quartets are a significant part of the chamber music repertoire, and Haydn is often referred to as the "father of the string quartet" due to his pivotal role in developing the form. Each instrument in the quartet plays a crucial role, not only in providing harmony and depth but also in allowing for intricate melodic lines and counterpoint, showcasing the composer's inventive style.

The other options do not align with the specific instrumentation of this piece. A full orchestra, a solo violin with piano, or a choir with instrumental support would each require different combinations of instruments, which are not representative of Haydn’s string quartet compositions. Understanding this context highlights the importance of instrumental arrangements in chamber music and Haydn's contributions to the genre.