Final answer:
Planning and zoning in the state of NH has various purposes, including ensuring the appropriate use of land and meeting the needs of growing communities. However, it doesn't involve discouraging low and moderate-income housing to increase taxes and revenue. So, the correct answer is option c.
Step-by-step explanation:
The purpose of planning and zoning in the state of NH includes helping to meet the demands of growing and evolving communities, encouraging the appropriate and wise use of the land, and not discouraging home-based day care. However, it does not include discouraging low and moderate-income housing to create higher taxes and more revenue. So, the correct answer is option c.