Mechanical waves are created when a suced energy cases a meno A
move
B compress
О
C expand
Dvibrate

D. vibrate

Explanation:

Energy can be defined as the ability (capacity) to do work. The various forms of energy are solar energy, electrical energy, chemical energy, thermal energy, wind energy, nuclear energy, sound energy, etc.

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.

Sound travels faster through solids than it does through either liquids or gases due to the faster vibration of its particles.

Hence, mechanical waves are created when a source of energy causes a medium to vibrate.

the author is intending to draw attention to the plight of refugees, editorial and biography support this. both workpieces make the reader empathize with enrique as well as with the other young migrants from central america. the writer, however, is using a different approach to each text.

the editorial includes strong words to persuade readers. he is trying hard to convince readers in the us to change its refugee approach.

the biography relies on narrative techniques and figurative language which the writer uses wisely in the setting, characterization, and personification to educate readers on the topic.

i believe it is "“i’ll beat thee, but i would infect my hands.”

explanation: