我需要回显一个下拉选项，它是从另一个页面上的mysql填充的

I have a three drop downs, 2 of which are populated from Mysql, so depending on what is selected in the first, define's what populates in the second, and then third. however. i need to take the users 3 selections, and carry them onto the next page and echo them, and then the same for the third page, i need to take the first pages answers, and the second, and echo them on the third page. and so on. this is my code so far:I have a three drop downs, 2 of which are popul