Which phase is involved in returning tissue to normal after infiltration of bacteria?

The phase involved in returning tissue to normal after the infiltration of bacteria is resolution. This phase is critical in the healing process as it signifies the end of inflammation, allowing the affected tissue to recover and return to its original state. During resolution, the body systematically removes dead cells, debris, and any remaining pathogens while promoting tissue repair and regeneration.

Resolution ensures that the inflammatory response does not become chronic, effectively restoring homeostasis in the body. An important aspect of this phase is that it involves various cellular and molecular processes that help to clear out excess fluid and inflammatory cells, ultimately leading to the restoration of normal tissue function and structure.

In the context of the other options, suppuration refers to the formation of pus, which indicates an ongoing infection rather than a resolution process. Congestion typically involves an excess of blood within vessels of a tissue, which can be a part of inflammation but does not signify resolution. Exudation refers to the process where fluids and proteins leak from blood vessels into tissues, also associated with the inflammatory response rather than returning tissue to normal. Therefore, resolution is the correct phase for the return to normalcy after bacterial infiltration.