Which example is not the proper use of a casting of a toolmark?
a) comparing with the cast of a suspect tool
b) comparing with a photograph of a suspect tool
c) examining for other trace evidence adhering to the cast
d) comparing directly to a suspect tool

When we say toolmark, this describes as the mark that is produced by a particular tool. This is typically used in forensic science for identification. Based on the examples above, the one that is not the proper use of casting of a toolmark is option B. Hope this helps.

1.state2.trash3.the earth