Answer: A). Genetics
Explanation: Genetics is a branch of biology that deals with the study of genes and heredity in organisms. Heredity can be defined as the transmission of genetic information or traits from parents to the offsprings.
Gregor Mendel was an Australian monk and his research made him to be referred to as the father of genetics. His research using garden was of scientific consequence and led him to propound two laws of inheritance: The law of segregation of genes and law of independent assortment ofof genes.