Answer:
The correct answer is option d. "whether two mutations that produce the same phenotype reside in the same or different genes".
Step-by-step explanation:
Complementation analysis, also known as complementation test or "cis-trans" test, is based on exposing the genetic material of a person with homozygous recessive mutation with the genetic material of her or his offspring. Complementation analysis is used to determine whether two mutations that produce the same phenotype reside in the same or different genes. If complementation occurs, it means that the mutations occur at different genes.