If 'muscle times speed equals power', then what is the ratio of the $SI$ unit and the $CGS$ unit of muscle?

The correct option is A ${10}^5$

Given :

Muscles $\times$ Speed $=$ Power

and we know that

Force $\times$ Speed $=$ Power

comparing both the equations;

Muscles $=$ Force

S.I. unit of force $=$ N $=$ Newton

CGS unit of force $=$ dyne

and $1N={10}^{5}dynes$

So the SI unit of muscles will be

= $N/dyne={10}^5$