The correct way to write "five teaspoons" is:
○ D. 5 tsp.
Here's the explanation:
- "tbs" is an abbreviation for tablespoons, not teaspoons.
- "tspns" is not a standard abbreviation for teaspoons.
- "tee" is not a recognized abbreviation for teaspoons in cooking or measurement terminology.
- "tsp" is the standard and widely accepted abbreviation for teaspoons.
Therefore, the correct option is D. 5 tsp.