Based on this information, what is Wanda's phenotype for the body color trait?

 - a gray body
 - a golden body
Wanda's genotype for the body color gene is bb. Wanda's genotype of bb has only b alleles. The b allele is for a golden body. So, Wanda's phenotype for the body color trait must be a golden body.
To check this answer, consider whether Wanda's alleles are dominant or recessive. The allele for a gray body (B) is dominant over the allele for a golden body (b). This means B is a dominant allele, and b is a recessive allele.
Wanda's genotype of bb has only recessive alleles. An organism with only recessive alleles for a gene will have the recessive allele's version of the trait. So, Wanda's phenotype for the body color trait must be a golden body.