Final answer:
The article 'Tutors Teach Seniors New High-Tech Tricks' primarily focuses on the benefits seniors receive from high-tech tutoring and the role of tutors in teaching these skills.
Step-by-step explanation:
The article titled 'Tutors Teach Seniors New High-Tech Tricks' is likely focused on examining the process by which seniors are educated in new technology, the benefits they gain from this education, and the role of tutors in this journey. The best choice that expresses the controlling idea of this article is likely option (a) The benefits of high-tech tutoring for seniors. This option is supported by the context given, which emphasizes the need for seniors to access and become proficient with essential technology for their daily lives and how social service agencies and other organizations play a role in facilitating this access.