Choice A rationale:

A+ blood can be safely transfused to a client with blood type O-.

The rationale is that the recipient, in this case, does not have antibodies against the A antigen, which is present on A+ blood.

Therefore, there is no antigen-antibody reaction.

Choice B rationale:

B- blood can be safely transfused to a client with blood type O-.

The rationale is similar to choice A, as the recipient does not have antibodies against the B antigen, which is present on B- blood.

Choice C rationale:

AB+ blood contains both A and B antigens and RhD antigen, which can potentially react with antibodies present in a client with blood type O-.

Therefore, it is not safe to transfuse AB+ blood to a client with blood type O-.

Choice D rationale:

O+ blood can be safely transfused to a client with blood type O-.

The rationale is that O+ blood does not have A or B antigens, which could react with antibodies present in the recipient.

Choice E rationale:

O- blood is compatible with blood type O- because it does not contain A, B, or RhD antigens, which could be targeted by antibodies in the recipient.