Final answer:
Max means that financial planning will protect his client's finances from the negative impact of inflation.
Step-by-step explanation:
When Max says that financial planning will make his client's finances market proof, he means that her finances will not have any negative impact from inflation. Inflation refers to the increase in prices of goods and services over time. By having a solid financial plan in place, Max's client can ensure that her money will retain its value even as prices rise. This can be achieved through strategies like investing in assets that appreciate in value or diversifying her portfolio.