Answer:
C. A Turtle suns itself on a rock during a cool day
Explanation:
Because, the three other answers are an internal stimuli
Sports drinks contain water, sugar and mineral ions at levels which are most effective at maintaining performance as well as this it also replaces the glucose and maintaining the correct ion/water balance for cells to function effectively.
Glassy igneous rocks (i.e. obsidian) are cooled very rapidly.
Is very bad. what is the question