Respuesta :
b. companies always carefully test any claims that they make about a product
Answer:
The correct answer is c. it can be difficult to verify how promotional claims are tested.
Explanation:
Letter A is incorrect because saying that all products are good would mean that they always help the consumer in any way.
B is also incorrect because the claims are not always tested; the claims are sometimes used because they sound well or because they sound convincing.
Option D is also incorrect because it is not possible to know if an independent laboratory tested the claim.
The correct answer is letter C because the companies almost never share the methods they use to test their claims, making difficult to verify what they say.
