How to compare two columns in excel for matches and differences?

Hello my name is mihai and i need your : )i have to do a python project in computer science and i’m really busy with my mocks this period of time besides this i’m not good at coding so could someone pls pls pls sort me out ? i actually beg ; ))

What a backup plan that you have created in a event you encounter a situation

For a typical middle-income family, what is the estimated cost of raising a child to the age of 18? $145,500 $245,340 $304,340 $455,500