D is the answer to your question
Answer:
Spillover sales.
Explanation:
Spillover sales can be defined as the sales of the product which are not advertised with the products that were advertised.
<u>In this sales are done to the customers of the products that were not advertised while they have come to buy an advertised product. </u>
In the given case, Harriet who always buys advertised grocery goes to a shop to buy them. But along with the advertised products she also bought those products that were not advertised. This type of purchase is known as "Spillocver sales".
So, the correct answer is "spillover sale".
Answer:
<u>c. Laboratory experiments have a high degree of control and may create an artificial atmosphere.</u>
Explanation:
A limitation of laboratory experiments is that the environment in which the experiments take place, is very much calculated and controled. This means that it is artificial, and this wll affect the generalization of the findings considering a not cotroling environment such as a real environment.