The most efficient way to ensure that producers are responsible for product is through

the answer is: Labelling

Labelling is used by companies to show several crucial information that related to their products. Those information could include things such as ingredients,  nutritional value, how to contact the company's customer service, etc). All of these information are needed to ensure that customers could held the producers accountable for the products they created.

answer; ///i believe the answer is (d) procedures to control the quailty of your product;

muslims control the north africa during the period of 1500 up

to 1800. they made a barrier to prevent further european exploration from

entering the africa from the north. however, the dutch ware still able to move

toward the interior with having south africa as one of the routes leading to

the east for trading with asia.