$13.$ Motivation is defined as

a$.$ a measure of how hard a person works

b$.$ the force thatenergizes, directs and sustains behavior

c$.$ the degree of ambition exhibited by a worker

d$.$ physiological brain activity

$14.$ According to Elton Mayo, workers are highly motivated by

a$.$ interpersonalneeds.

b$.$ task difficulty.

c$.$ opportunities for career advancement

d$.$ achievement needs

l$5$ Maslow's need hierarchy

a$.$ serves as a good predictive model of worker motivation.

b$.$ has led to useful applications for increasing work motivation.

c$.,$ has not led to useful applications for increasing worker motivation

d$.$ involves ten levels.

$16.$ Which of the following is NOT a contemporary