When creating a Google Video campaign with “brand awareness and reach” as the campaign goal, why is using target cost-per-thousand impressions (tCPM) the optimal bidding strategy?

It creates as many impressions as possible in line with the target cost-per-acquisition.
It optimizes bids to put the campaign’s message in front of as many relevant people as possible.
It analyzes historical feedback and makes adjustments to bids based on performance signals.
It acquires as many clicks as possible according to the daily budget that’s been set.

The correct answer is:

It optimizes bids to put the campaign’s message in front of as many relevant people as possible.