Static electricty is the study of.. A buildup of charge
B electric discharges
C electric fields
D all of the above

all of the above

Explanation:

i study this kind of stuff in school

atomic = no of protons.

mass number-atomic number = neutron number

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer