In this stage, glyceraldehyde 3-phosphate (G3P) is converted into ribulose 1,5-bisphosphate (RuBP).

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).   so the answer is a.