Which of the following statements about the Samsung Gear is true?

The statement regarding the Samsung Gear's compatibility with Apple devices is accurate. Typically, Samsung Gear smartwatches are designed to work seamlessly with Samsung smartphones and select Android devices. Compatibility with Apple devices is limited or nonexistent, which reinforces option A as the correct choice.

In contrast, the other statements do not align as closely with the actual features of the Samsung Gear. Many Samsung Gear models offer a variety of functionalities, including some suitable for fitness tracking; however, they do not mandate a music streaming subscription, making option B misleading. While there are models that cater to business professionals, the primary focus of the Samsung Gear lineup has often been on fitness and everyday use rather than strictly business, which distances option C from being true. Lastly, while it is accurate that certain models include basic fitness tracking features, these features can vary significantly across the different models, and many are much more advanced than 'basic,' making option D less applicable to the entire lineup. Thus, the most reliable statement is the one regarding compatibility with Apple devices.