This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
Cell shape and physical structure is provided by 
Select and explain. 
A. Cell membrane, B. Microtubules, C. Microflaments, D. Golgi apparatus
B: Microtubules
Answer: B: Microtubules 
Explanation: Microtubules are the largest cytoskeleton component. Cytoskeleton provides a structural framework for the cell. (REF TEXTBOOK OF MEDICAL PHYSIOLOGY GEETHA N 2 EDITION, PAGE NO - 9)