A(n) ________ is an amendment to a policy that changes the benefits or conditions of coverage

While filling out a survey, a respondent comes across a question that asks for respondent's annual income. There are five answer options and each option includes a range (e.g., $20,000 to $40,000). What is this question format called?

a. Structured question b. Unstructured question c. Restricted options question d. Unrestricted response question e. Categorical question

What happens to the cost of safety stock when the service level increases?

What will be an ideal response?