Practical online capabilities: with telecommunications and a personal computer, which of the following activities are feasible through typical online services and networks?

Introduction / Context:
The combination of a personal computer and telecommunications (dial-up, broadband, cellular) opens access to many online services. Historically and today, users can download software, purchase products, and even request postal delivery services through online intermediaries. Recognizing the breadth of these capabilities is essential for basic computer literacy exams.

Given Data / Assumptions:

• Users connect to public networks and service providers.
• “Public domain programs” and freeware are commonly distributed online.
• Hybrid services can convert electronic messages into printed mail for postal delivery.
• E-commerce platforms frequently provide discounts relative to retail pricing.

Concept / Approach:
Each listed activity corresponds to well-established online services: software distribution sites and repositories for downloads; hybrid mail services for printing and posting letters; and online marketplaces for discounted goods. Therefore, the comprehensive answer that includes all items is correct.

Step-by-Step Solution:

Verification / Alternative check:
Historical bulletin board systems and modern app stores support downloads; hybrid mail has existed via numerous providers; e-commerce discounts are ubiquitous.

Why Other Options Are Wrong:

Common Pitfalls:
Confusing freeware with illegal copying; assuming postal delivery requires in-person visits—hybrid services bridge digital and physical mail.

Final Answer:
All of the above.