What do the national geographic video and "hope survives in search for katrina's missing" have in common?
a. both tell the stories of individual people affected by the storm.
b. both are based on the opinions or interpretations of a narrator.
c. both focus on interviews with victims to provide information.
d. both provide sound effects to enhance the overall experience.

Both provide sound effects to enhance the overall experience

D. Both provide sound effects to enhance the overall experience.

Explanation:

Quality sound expel diversions, enabling clients to truly concentrate on what's being said. Conversely, low quality sound encounters can mean clients center around the mutilations and diversions, hampering their experience whether they're attempting to tune in to music or pursue a motion picture.  

Sounds ought to submerge the audience, maneuvering them into the story that is being told.

a line graph.

explanation:

the second option.is correct