There are two people holding on to the edge of a cliff. One is your mother, one is your grandfather. The cliff is weak under the three of you so you only have time to save one person. Who would you save? I would try to figure out who is more at risk, and I would consider the condition of both my mother and my grandfather. In the end I would either try to save both and risk the death of all three of us, or save my mother who is young and healthy.
Copy and paste, hope this helps! <3