When choosing a campaign objective, what should it align with?

The correct answer is "What you want to achieve overall with your campaign" because your campaign objective is the primary goal you aim to accomplish with your advertising efforts. Selecting the right objective (e.g., brand awareness, traffic, conversions) directly influences the ad formats available, bidding strategies, and how Reddit's algorithm optimizes delivery. If your objective is misaligned with your overarching business goal, your campaign will likely be inefficient and ineffective. "Reddit's trending topics" might inform creative or targeting, but not the fundamental objective. "The creative elements in your ads" are designed after the objective is set to support it. "The ad group's targeting parameters" are also determined after the objective to reach the most relevant audience for that goal.