Final answer:
The strongest counter parent P can use against parent O's objection is to emphasize the need for ongoing training in a rapidly advancing technological world, which supports early introduction to computers and computer languages.
Step-by-step explanation:
The strongest logical counter that parent P can make to parent O's objection is option (A): When technology is advancing rapidly, regular training is necessary to keep one's skills at a level proficient enough to deal with the society in which one lives. This argument underscores the importance of building a solid foundation in computer skills from an early age, as these skills are not only about knowing the current technology but also about developing the ability to learn and adapt to new technologies as they emerge.
Parent P could also point out that learning computer languages and developing technical literacy can foster critical thinking and problem-solving skills, which are universally applicable and not rendered obsolete by advancements in technology. Furthermore, early exposure helps bridge the digital divide and ensures that all students, regardless of their socioeconomic background, have the opportunity to become proficient with technology and prepare for a technology-based job market.