The correct option is B Cytoskeleton
The cytoskeleton is a structure that helps cells maintain their shape and internal organisation, and it also provides mechanical support that enables cells to carry out essential functions like division and movement. Eukaryotic cells contain three main kinds of cytoskeletal filaments; microfilaments (actin), intermediate filaments and microtubules (tubulin). Cytoskeletal elements interact extensively and intimately with cellular membranes.