Target cost-per-acquisition (CPA), which factors in auction-time signals including device, location, time of day, remarketing list, language, and operating system, automatically optimizes bids across:

August 17, 2019 Certificate Land

search and display inventory to help advertisers reach their desired cost-per-impression goal
search inventory to help advertisers reach their desired cost-per-install goal
search and display inventory to help advertisers reach their desired cost-per-install goal
search and display inventory to help advertisers reach their desired cost-per-click (CPC) goal

The correct answer is:

search and display inventory to help advertisers reach their desired cost-per-install goal.