“…and their children may include…” The underlined word is a...

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Q1692089 Inglês
[…] The teen years are ripe for producing conflict in the family. The relationship between parents and their children may include these typical areas of conflict:
• School performance;
• The teen's choice of friends;
• Spending time with the family versus with peers;
• Disputes over the teen´s curfew;
• Cars and driving privileges;
• Dating and sexuality;
• Clothing, hair styles and makeup;
• Self destructive behaviors such as smoking, drinking and using drugs.[…]

Adapted from: MARQUES, Amadeu. On
stage 3.São Paulo: Ática, 2010. 
“…and their children may include…” The underlined word is a modal verb. Mark the alternative with an incorrect use of a modal verb:
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