With the addition of more and more instruments to the orchestra composers could pay more attention to: A. tonality. B. dynamics: C. form. D. tone color.

The correct answer is D. tone color.With the addition of more and more instruments to the orchestra, composers could pay more attention to tone color. Tone color refers to the unique quality or timbre of a sound that distinguishes it from other sounds. By incorporating a wider variety of instruments, composers can create a richer and more diverse palette of tone colors, allowing them to explore new textures and soundscapes in their compositions.