Answer:
The zygote will have 96 chromosomes.
Explanation:
If self-fertilization occurs, and two gametes (each having 48 chromosomes) unite, the zygote will have 96 chromosomes ( or 4 sets)
Inhale and exhale because you inhale the oxygen and exhale the carbon dioxide
Only autotrophs can convert solar energy into chemical energy
(1), (2), (4) either require two parents (which would not produce identical offspring to either parents but similar and different to either one in number respects) or there could be mutations / different alleles chosen for the cell division, so I think the answer would be (3) cloning.