What is the cytoskeleton composed of?

Match the following columns correctly:

Column $I$ (Filament)	Column $II$ (Structure $\&$ Function)
$(a)$ Microfilaments	$(i)$ Strong and fibrous proteins; provide support to filaments and tubules
$(b)$ Microtubules	$(ii)$ Actin proteins; responsible for cytoplasmic streaming
$(c)$ Intermediate filaments	$(iii)$ Globular tubulin proteins; responsible for chromosome movement

The filament of the flagellum is composed of which protein?

Spindle fibre is made up of

$S$ - Statement: The cytoskeleton is composed of three types of filaments: microfilaments, microtubules, and intermediate filaments.
$R$ - Reason: Microtubules are hollow tubes made of the globular protein tubulin.

The spindles are formed of