Cytoskeleton — Structure & Function

Which image represents the function of the cytoskeleton?

• A: By Karen Arnold CC0, via publicdomainpictures.net
• B: [Public domain], via Wikimedia Commons
• C: By Witerhawk at English Wikibooks. [Public domain], via Wikimedia Commons
• D: By Clker-Free-Vector-Images CC0, via pixabay.com