Choose the correct part and complete the sentence.

The ability to recombine genetic material from different organisms, resulting in the production of a genetically modified organism, is possible for ...

• the same basic chemical structure of the genetic material of all of the organisms.
• all of the organisms that are capable of reproduction.
• DNA vectors that are readily taken up by all of the organisms.
• the highly variable basic chemical structure of the genetic material of all of the organisms.