If Sam doesn’t enable conversion tracking for his Shopping campaigns, which bidding option below will be available to him?

Q) If Sam doesn’t enable conversion tracking for his Shopping campaigns, which bidding option below will be available to him?

a) Target cost-per-acquisition (target CPA) bidding
b) Maximum cost-per-acquisition (max. CPA) bidding
c) Enhanced cost-per-click (ECPC) bidding

d) Maximum cost-per-click (max. CPC) bidding