Final answer:
Good sports etiquette involves showing respect for opponents, following rules, and displaying good sportsmanship. Failing to call out a score before serving in tennis is an example of bad sportsmanship.
Step-by-step explanation:
Good sports etiquette is an important aspect of participating in sports. It involves showing respect for opponents, following the rules, and displaying good sportsmanship. One example of good sports etiquette is option D, which involves failing to call out a score before serving in tennis. This is considered bad sportsmanship and it is important to communicate the score to maintain a fair game and uphold the integrity of the sport.
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