Which of the following is an example of biotechnology ? a.) a petroleum based lubricant used in farming machinery b.) a driverless, solar powered automobile c.) a robotic probe on mars that can detect water d.) a mechanical implant that delivers medicine

d.) a mechanical implant that delivers medicine

Explanation:

In biotechnology, technology is leveraged to solve biological problems. Most common examples are genetic mutations in organisms to produce food and livestock of superior quality.  

Mechanical implants are used for site specific drug delivery, and allow sustain release of the drug at the target site. For example, histrelin implants are used for the treatment of prostrate cancer.