Why is it IMPORTANT (ELABORATE IMPORTANCE IN 8 POINTS ) to measure advertising effectiveness? List various METHODS (ELABORATE METHODS IN DETAIL) of measuring advertising effectiveness. WHAT would be the most effective method to evaluate pre and post effectiveness for your company and WHY ( ELABORATE IN AT LEAST 5 POINTS ) ?

Why is it IMPORTANT (ELABORATE IMPORTANCE IN 8 POINTS ) to measure
advertising effectiveness? List various METHODS (ELABORATE METHODS IN
DETAIL) of measuring advertising effectiveness. WHAT would be the most
effective method to evaluate pre and post effectiveness for your
company and WHY ( ELABORATE IN AT LEAST 5 POINTS ) ?