For the consideration goal, you should use Brand Lift to understand the extent to which your campaign influences viewer perception or intent for your product.

• You should use Reach Planner.
• You should use core performance metrics.
• You should use Brand Lift.
• You should use Viewability with Active View.

The correct answer is: You should use Brand Lift.

In order to understand how your Google Video campaign with a consideration goal is impacting viewer perception or intent for your product, you should utilize Brand Lift. This tool measures the effectiveness of your video ads by analyzing metrics such as ad recall, brand awareness, and consideration, rather than traditional metrics like clicks, impressions, or views. With Brand Lift, you can align your campaigns with your marketing goals and gain detailed insights on the influence your campaigns have on viewer perception and intent. Brand Lift is only available for in-stream and bumper ads purchased through an auction and not for outstream and in-feed video ads. To use Brand Lift, you must create a Product or Brand representing your advertised object, and then Google will assist you in generating a set of survey questions to measure Brand Lift.

Read more here: https://support.google.com/google-ads/answer/9049825