{{i}}quEstions 11～13 ArE BAsED on thE Following intErviEw BEtwEEn A rEportEr AnD A sportswomAn.{{/i}}

whEn DiD miss grEEn BEComE A swimming stArAt thE AgE oF 15.
B．At thE AgE oF 20.
C．At thE AgE oF 18.
D．At thE AgE oF 16.