To reach Town Rank C, you must accumulate 1,800 total points across three categories. Focus on donating at least 100 unique items to the Museum—specifically targeting easy-to-find Bronze-tier insects and common fish like Carp or Chub. In the ocean, you must clear the trash in the 20m depth zone and activate at least 20 coral sites. Additionally, you must upgrade your starter house to a Level 1 House (Small House) through the Carpenter Shop, which requires 50 Wood, 20 Stone, and 2,000 Coral Coins. Participating in seasonal festivals and completing three villager requests per week will provide the final points needed.
Reaching Rank C provides vital progression unlocks, including the availability of Silver-tier seeds (such as Strawberries and Radishes) at Sam's General Store. You will also unlock the ability to purchase the Fruit Tree Saplings and gain access to the Laboratory's advanced equipment upgrades, which are essential for processing higher-quality kelp.