This is another name for Piezoelectric microphones:

The ________ perspective is your initial, gut reaction to an image

Fill in the blank(s) with correct word

Twitter ______.

A. began as an outgrowth of short message services (SMS), in which users could send basic text messages to one another via mobile devices B. can’t be used effectively in public relations C. can’t be used effectively in advertising D. can’t be used effectively in news gathering