The correct option is <u>A. Carbon dioxide will be produced due to cellular respiration.</u>
Explanation:
Respiration can be described as a process in which sugars are converted into carbon dioxide and water. As the children discover that yeast cells lack chloroplast, hence they got the idea that yeast cells do not carry out photosynthesis. The children also observed that the yeast cells have abundance of the organelle, mitochondria. As mitochondria are the sites where cellular respiration takes place hence the children got the idea that yeast carries out cellular respiration and carbon dioxide is produced as a result of it.
