Answer:
Step-by-step explanation:
The sentence that is incorrect in each group:
Group 1: Neither Steve nor Gary wanted to present his own ideas.
Explanation: The incorrect part is "his own ideas." Since we have two subjects ("Steve" and "Gary"), the correct pronoun to use should be "their own ideas" to maintain agreement.
Group 2: Sandy was the only one in the class who had his or her homework.
Explanation: The incorrect part is "his or her homework." To be gender-neutral and inclusive, it is better to use a plural pronoun like "their homework" instead of specifying a singular gender pronoun.
Group 3: If anyone wants the tickets, they need to call me tonight.
Explanation: The incorrect part is "they need." When using "anyone" as a subject, it is more grammatically accurate to use a singular pronoun. The correct form should be "he or she needs" or "he or she needs to call me tonight."