When are computers most vulnerable to threats or damage?

A)without virus protection
B) with virus protection
C) in a cold environment
D)when connected to the Internet
E) when disconnected from the Internet

Nstrumental music that supports the main part(s) chamber music 2. a large group of instruments usually including woodwinds, brass, and percussion band 3. music written for small ensembles for an intimate setting accompaniment 4. a person who leads an ensemble conductor 5. an electronic keyboard capable of multiple instrument sounds