<u>Answer:</u><em>A. manipulate bacterial strains to be less pathogenic</em>
<em>Industrial microbiologist- manipulate bacterial strains to be less pathogenic is not correct matched.</em>
<u>Explanation:</u>
An industrial microbiologist supervises the microbial activities employed in the industry like cheese making in the food industry. Microbiology is the study of micro organisms which helps in tackling various diseases, making use of microbes in manufacture of various things.
A medical microbiologist perform the function of treating infections by discovering the causes of infectious diseases. A public health microbiologist studies a population to track the microbial diseases among that population and suggest measures to tackle it.
Agricultural microbiologist applies microbiology in agriculture by discovering microbial causes of crop diseases and finding appropriate solutions.
Negative growth rate is when a population's average number of deaths is greater than its average number of births. Zero growth rate is when the average number of deaths equals the average number of births.