Final answer:
The more likely explanation is that there was a microclimate near the grass.
Step-by-step explanation:
The more likely explanation for the apparent discrepancy between the grass being noticed and the minimum temperature reported by the National Weather Service being only 34F is option B) There was a microclimate near the grass. A microclimate refers to a small area within a larger region that has different weather conditions. In this case, the grass may have been located in a sheltered area that allowed it to drop to a lower temperature than the rest of the surrounding area.