Fill in the blank. The National Safety Code $($NSC$)$ in Canada is a set of $q,$ standards developed by the member jurisdictions of CCMTA $($Canadian Council of Motor Transportation Administrators$)$ in consultation with the motor carrier industry to ensure road safety and facilitate the safe and efficient movement of people and goods across Canada.

a$)6$

b$)16$

c$)36$

d$)3$