Final answer:
Option 3). Brain-heart infusion, trypticase soy agar, and nutrient agar are examples of complex media, which support the growth of many types of bacteria without selecting for or differentiating between different species.
Step-by-step explanation:
Complex media include nutritional agar, trypticase soy agar (TSA), and brain-heart infusion. These media types aren't made to pick out or distinguish between certain kinds of bacteria; instead, they're utilized to cultivate a broad range of bacteria. Complex media contain a variety of nutrients that support the growth of many different types of bacteria, in contrast to differential or selective media, which distinguish between bacteria based on specific biochemical traits or prevent the growth of some microorganisms while promoting the growth of others. Since these media contain extracts and digests of materials with varying compositions, such as meat or yeast, their exact chemical makeup is unknown. Thus, option 3. Complex media is the right answer.