Need help with this question I’m confused

Apea plant that is heterozygous for the tall phenotype can produce short offspring when self pollinating. which of the following explains why this occurs? a. segregation of allels b. condominance of traits c. polygenic expression of traits d. independent assortment of alleles

Could someone me with number one you

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.