Correct. The Press select to use an item option wasn't introduced until the Gold/Silver/Crystal series of games. In the later games, simply selecting a key item would show 3 options-Use, Register (in G/S/C it's SEL), or quit. The middle buttons sets it to Select.
In order to receive Social Security disability benefits as an adult, you must be 18 years of age or older, and permanently residing in an American state or territory. Figure out your work credits. Generally, to be eligible for benefits, you must have worked in the recent past and earned a certain amount.
(This maximum gets you to 12 months before your application date, plus five months for the waiting period, so your earliest established onset date is 17 months before the application date.) In turn, the earliest you can become eligible for Medicare is two years after you apply for Social Security disability.