All engineers solve problems related to any field. so the answer is option A.
Hope it helps!!!
The correct order is most likely 3, 4, 1, 2.
<span>United States meat and poultry associations brought suit in US courts to stop the USDA from closing meat and poultry processing plants that continually failed microbial tests screening for salmonella and E coli 0157h7. The USDA implemented these tests in 1998 so that it would have the authority to shut down plants that failed the tests.</span>