The clear-and-present-danger test devised by the supreme court was designed to define the conditions under which public authorities could . ban obscene materialsb. suspend habeas corpus protectionsc. mobilize the national guardd. limit free speeche. commit troops to situations of potential foreign combat

d.

Explanation:

The clear-and-present-danger test devised by the Supreme Court was designed to define the conditions under which public authorities could limit free speech. This test was later on replaced with Brandenburg v. Ohio's "imminent lawless action" test, in the year 1969. Both of which deal with limiting the first amendment freedoms of free speech, as well as the press and assembly.

answer; the automatic system because it is a "gut reactor"