The graphs show the learning curves of a student practising two new skills - HSC - SSCE Personal Development and Physical Education - Question 20 - 2009 - Paper 1

To determine which options best reflect skills X and Y based on the learning curves:

• Skill X shows a gradual improvement in performance, suggesting it requires consistent and repetitive practice to master. This is characteristic of athletic skills such as a high jump.
• Skill Y demonstrates a quicker improvement in performance, indicative of skills that can be learned rapidly with less repetitive practice. This aligns well with shotput, which generally benefits more from technique rather than prolonged practice.

Thus, the best option that reflects Skill X and Skill Y is (D) Tennis serve - Shotput.