Réponse :
Hey!!
a) Eloise Welling's specialty is the 50 km walk. She is a walker.
b) Mitchel Watt's specialty is the long jump. He is a jumper.
c) Sally Pearson's specialty is the 100 m hurdles. She is a hurdler.
d) Cameron Hammond's specialty is boxing. He is a boxer.
Explications :
I hope I helped!!