Answer: Complete dominance
Explanation: complete dominance occur when a dominant allele in heterozygous form completely mask the effect of the recessive allele.
For example a situation where Tt having two allele and allele T for tallness is dominant over t for shortness making the plant phenotype a Tall plant. This is called complete dominance.
A condition when the heterozygous allele do not completely expressed itself over the recessive allele is called Incomplete dominance.
For the plant to have a pigmented color in an heterozygous form the allen M for pigment is completely dominant over allele m for albino.