Question

Genetic engineering is the process of manipulating genes for practical purposes.

How could genetic engineering most likely benefit people with genetic diseases in the future?
Genes causing diseases could be replaced with various types of plant genes.

Genes causing diseases could be eradicated from the human genome through the use of restriction enzymes.

Genes causing diseases could be repaired through the use of recombinant DNA.

Genes causing diseases could be cloned and placed into other human cells.