The correct answer is C) about 60 degrees above the horizon. When firing a pyrotechnic distress signal, it should be aimed about 60 degrees above the horizon. This angle allows the signal to be visible from a distance and increases the chances of being spotted by passing vessels or aircraft. Aiming the signal at this angle ensures it reaches a sufficient height to be seen, while still remaining visible on the horizon. The other options are incorrect because: A) aiming at a specific vessel may not be effective if that vessel is not the one that can provide assistance; B) aiming into the wind may not provide the best visibility; and D) aiming straight overhead could make the signal less visible on the horizon.