Answer:
A
Explanation:
The officer would have had permission regardless of anything else, kind of like letting someone into your house.
Twenty is the atomic number of potassium.
C is correct. The work-force relation is given by W=F·d, where F is force vector, and d is the displacement vector. The dot is the dot product, which is a measure of how parallel the two vectors are. It can be restated as the product of two vector magnitudes times the cosine of the angle between them. Therefore work is a scalar, not a vector, since the dot product returns a scalar.