What are 10 distinct diffrences between a v6 and a v8?

When you can't determine who arrived at an intersection first, yield to the vehicle a. closest to you on the left b. closest to you on the right c. across from you d. with the largest wheelbase

You must all emergency vehicles using a siren or flashing lights. a. honk to make your position known to b. follow c. yield the right-of-way to d. drive around

Why is it essential to operationally define the variables in a study?