Answer:
D. During her presentation, Mary tried to minimize confusion by providing examples.
Step-by-step explanation:
Deteriorate means to make/become worse. Usually used to describe the condition of something or someone.
Subside means to sink to a lower level. Usually used to describe level of noise, water etc. In this case, it means to become less strong.
Miscalculate means to interpret/judge something incorrectly. Usually used when a mistake is made in judging a situation or making a calculation.
Minimize means to reduce to the smallest possible amount. Usually used to describe risks, problems etc.