Final answer:
Ada's action of discarding plastic bags after one use exemplifies wastefulness, failing to reflect environmental responsibility or recycling efforts.
Step-by-step explanation:
Ada's behavior in the scenario where she runs out of bags to pick up after her dog, goes to the grocery store to buy some bags along with a few other items, and then throws the plastic bags away after unpacking, best exemplifies wastefulness. This is because she is discarding the plastic bags rather than reusing or recycling them, which contributes to environmental waste. While getting new bags was a matter of convenience, the end action fails to reflect environmental responsibility or recycling. In contrast, the reuse of resources and packaging can reduce waste, with benefits for both the environment and the economy.