Final answer:
Intermediate filaments include desmins in the cytoplasm of muscle cells and lamins in the nucleus, which are important for cellular integrity and structure.
Step-by-step explanation:
The correct answer is c) Cytoplasm: Desmins, Nucleus: Lamins, Found in muscle cells. Intermediate filaments are a diverse group of cytoskeletal elements crucial for cell structure and function. In the cytoplasm, desmins are intermediate filament proteins specifically found in muscle cells, where they play a role in anchoring cells together and transmitting the forces of muscle contraction. In the nucleus, lamins form part of the nuclear lamina, providing structural support to the nuclear envelope.