An agent is

a $.$

any intermediary with legal authority to act on behalf of the manufacturer but who does not take title to products.

b $.$

independent firms or individuals whose principal function is to transport goods.

c $.$

any intermediary that takes ownership of a manufacturer's goods or services and then finds multiple buyers for them.

d $.$

a manufacturer's paid representative and acting voice in initial sales transactions.

e $.$

a manufacturing "matchmaker" that actively seeks out potential consumers and brings them to retailers.