Based on this information, what is Fifi's genotype for the ear type gene?
normal ears EE
This passage describes the ear type trait in rats:

In a group of rats, some individuals have normal ears and others have dumbo ears. In this group, the gene for the ear type trait has two alleles. The allele E is for normal ears, and the allele e is for dumbo ears.
Fifi, a rat from this group, has normal ears. Fifi has two alleles for normal ears.
All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different alleles, or forms, that can cause different versions of a trait.
For example, flower color is a trait in pea plants. The gene for this trait has two possible alleles. Each allele is represented by an uppercase or lowercase letter. The allele F is for purple flowers, and the allele f is for white flowers. Each pea plant has two alleles for the flower color gene—one allele inherited from each parent.
An organism's genotype for a gene is its combination of alleles for that gene. So, a pea plant may have a genotype of FF, Ff, or ff for the flower color gene.
An organism's phenotype for a trait is its observable version of that trait, which depends on the organism's combination of alleles. A pea plant may have a phenotype of purple flowers or white flowers for the flower color trait.
An organism's genotype for a gene is its combination of alleles for that gene. Fifi has two alleles for normal ears (E). So, Fifi's genotype for the ear type gene is EE.