Answer:
Amount of sugar
Explanation:
An experiment has an experimental variable and a control variable. The amount of sugar is experimental variable in the give experiment. Here, boiling point of sugar solution would change in accordance to changes in the amount of sugar. Amount of water serves as control variable and is kept constant throughout the experiment.
that they give birth to live young, or are there answers to choose from?
I'm not seeing any options to choose from but Mitochondria and Chloroplasts provides plants with energy.