Final answer:
Inflammation and regeneration are very active during tissue repair and formation.
Step-by-step explanation:
The process that is very active during tissue repair and formation is inflammation and regeneration. When there is tissue injury, the body responds with inflammation, which involves redness, warmth, swelling, and pain in the affected area. Inflammatory chemicals and white blood cells are released to initiate the healing process.
The repair phase includes blood clotting and the deposition of collagen fibers by fibroblasts, which help in the formation of new tissue.