Final answer:
The opinion in option A has strong support as it provides a positive assessment of the product and uses strong language to add credibility.
Step-by-step explanation:
The correct answer is A. The opinion in option A, "The Zap-Quick II performs well and remains one of the best buys on the market today," has strong support. This statement provides a positive assessment of the product and implies that it is highly regarded. It uses strong language, such as "performs well" and "best buys," which adds credibility to the opinion. Additionally, the use of "remains" suggests that this opinion is consistently held over time, further strengthening its support.