Identify the Letter of the Choice That Best Matches the Phrase

Identify the letter of the choice that best matches the phrase or definition.
-Detects and protects a computer and its data from unauthorized intrusions

A) browser
B) app
C) video conferencing
D) discussion forum
E) software suite
F) tax preparation
G) instant messaging
H) chat room
I) media sharing
J) personal firewall
K) clip art
L) database
M) image editing
N) photo editing
O) personal finance
P) web feed
Q) CAD
R) blogware
S) wireless messaging
T) email