________ resemble incandescent light bulbs and give off a lot of heat

________ can define 32 different scenarios for comparison

Fill in the blank(s) with correct word

When a user attempts to log into their online account, Google sends a text message with a code to their cell phone. What type of verification is this?

A. Knowledge-based authentication B. Dynamic knowledge-based authentication C. Out-of-band identity proofing D. Risk-based identity proofing