For whom is this passage probably being written?

Parents is correct because the passage informs us about the importance of preparation for summer heat, and the final sentence specifically refers to families.
Business owners is incorrect. This is because the passage does not address any business topics.
Engineers is incorrect. This is because the passage directs families on how to be prepared for summer heat, which is not specific to engineers.
Teachers is incorrect. This is because the final sentence mentions families, and a teacher would not be the best applicant for the mentioned scenario.