$22)$ One group of psychological factors that influence the decision$-$making process would be $\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_.$

a$.$ convenience

b$.$ safety issues

c$.$ stereotypes and perceptions

d$.$ sensitivity to price

$23)$ Which type of transportation created unpredictable travel patterns and opened up travel to everyone?

a$.$ Airlines

b$.$ Automobiles

c$.$ Rail

d$.$ Bus