Questions: Great. The flame kills all the microbes and sterilizes the wire loop. Why is this important do before working with the chicken farm sample?

The answer is (d): To avoid contamination.

Explanation for each option: a) To reduce the spread of antibiotic resistance - While sterilizing the wire loop can help in reducing the spread of antibiotic resistance by preventing the transfer of resistant bacteria, this is not the primary reason for sterilizing the loop before working with a sample. b) All the answers are correct - This option is incorrect because not all the provided answers are correct. c) Salmonella can be found everywhere - While it is true that Salmonella can be found in many places, this statement does not directly address the importance of sterilizing the wire loop before working with the sample. d) To avoid contamination - This is the correct answer. Sterilizing the wire loop is crucial to avoid contaminating the chicken farm sample with other microbes that might be present on the loop. This ensures that any observations or results obtained from the sample are accurate and not influenced by external contaminants.

Summary: Sterilizing the wire loop before working with the chicken farm sample is important to avoid contamination, ensuring the accuracy and reliability of the results.