Identify each italicized subordinate clause as a noun clause, an adjective clause, or an adverb clause.

the exhibition could not begin until phineas barnum appeared.

a. noun clause
b. adjective clause
c. adverb clause

Which of the following is not a fire safety precaution a; start fires with kindling or other fire starters b: check local regulations and conditions before starting a fire c: clear flammable debris away from fire area d: extinguish all burning embers before leaving