Which best describes step 3 in the diagram?
restriction enzymes cut the dna into fragments; the fragments join with the host dna to create recombinant dna.
recombinant dna is inserted into a biological vector; the vector houses the recombinant dna and is capable of creating copies of dna for itself and the recombinant dna.
cloning of the recombinant dna occurs; the dna is cloned in the biological vector to create more dna for use in the host.
recombinant dna is inserted into a mechanical vector; the mechanical vector allows the dna to be inserted into the dna clone for use in the host.

Recombinant DNA is inserted into a biological vector

The vector houses the recombinant DNA and is capable of creating copies of DNA for itself and the recombinant DNA

Genetic engineering is the process of using recombinant DNA (rDNA) technology to alter the genetic makeup of an organism. Traditionally, humans have manipulated genomes indirectly by controlling breeding and selecting offspring with desired traits.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

i hope this : )

your answer would be a, maximum exploitation of resources.