Useful Material Or Knowledge Crossword Clue 5 2 3 4 -

Detective James was known for his vast (5) of information, which helped him solve complex cases. His partner, Sarah, would often ask him to confirm if he had received her messages, to which he would simply reply " II " (2) to indicate he had received two messages. James's knowledge of forensic science was impressive, especially when it came to understanding the DNA (3) evidence. As they closed in on the culprit, James realized that the final piece of the puzzle lay in deciphering the PORT (4) that would reveal the suspect's location.

Steel II DNA Port

2.Is it American or British English

please provide more hints

1.what is the category