Final answer:
The speaker obtains his information about the citizen through personal experience, education, and research.
Step-by-step explanation:
The speaker obtained his information about the citizen through various sources. He refers to his education, job, and community involvement as a parent and concerned resident, which establishes his credibility. Additionally, he mentions that he has researched the subject, indicating that he has gathered information from reliable sources. By combining his personal experience, education, and research, the speaker obtains information about the citizen.
Hence, the speaker uses research, knowledge, and firsthand experience to gather information about the citizen.