There's a thread on the MyUnisa discussion forum and I've just sent a mail to the lecturer about question 3 as there was no response on the so-called official forum. I don't know how we are expected to do this - I don't see any value in it when there are so many obviously better alternatives. Even if you went to an old age home you'd still have to kidnap someone to take them down to the ATM...
If I get a response to the mail, I'll copy it here.