A rescuer should perform compressions on an infant at a rate of _____.

For infant CPR, compressions should be performed at a rate of at least 100 compressions per minute. This rate aligns with the recommended guidelines from key organizations such as the American Heart Association. The objective of maintaining a rate of at least 100 compressions per minute is crucial for ensuring adequate blood circulation to vital organs, particularly the brain and heart, during cardiac arrest.

Compressing the chest at this rate helps to create the necessary positive pressure within the chest cavity to effectively circulate blood. While the overall goal is to achieve a balance between compressions and rescue breaths, the emphasis on a minimum rate of 100 compressions per minute supports the efficacy of CPR, given that research shows this rate is optimal for maintaining blood flow during resuscitation efforts.

It's important to note that while the other options suggest lower or unreasonably high rates, adhering to the guideline of 100 compressions per minute is based on clinical evidence and enhances the chances of successful resuscitation.