Answer:
The correct answer would be C. Number 2 because the experiment was repeated and the results were always the same.
Reliability refers to the degree of consistency and stability of any tool, test, or any experiment.
The test, tools, or experiments which produce the same results every time it is used.
In experiment 2, the same experiment was performed multiple times and every time the results produced were the same.
Thus, experiment 2 is more reliable.
