D. The macronucleus does not disintegrate during conjugation.
The macronucleus contains the working copies of genes needed to support an enormous cell. It is formed by a division of the fused diploid nucleus after conjugation followed by multiple rounds of internal gene replication which does not occurs in the micronucleus.
It engages in a reforestation project
Is called the Glottis. Hope this helps:)
The correct answer is C: the gravitational forces due to the sun and the moon cancel each other's effect.