Which event in the antiwar movement resulted in the deaths of college students at the hands of National Guard troops?
A. Democratic National Convention demonstrations
B. March on Washington
C. Kent State University protests
D. Sit-ins at Columbia University

The correct answer is C. The event that resulted in the deaths of college students at the hands of National Guard troops was the Kent State University protests.

Explanation:

The Kent State University protests were the events of May 4, 1970 at Kent State University.  On that day, four students were shot dead by members of the National Guard on the campus of the state university in Kent, Ohio. These included Allison Krause (19), Jeffrey Miller (20), Sandra Scheuer (20) and William Schroeder (19).  

The campus had been the scene of student demonstrations against the ongoing Vietnam War since May 1. The population of the United States was highly polarized. A direct trigger for the student protest was the announcement by President Richard Nixon on April 30, 1970, that US troops would be sent to Cambodia to support the South Vietnamese invasion. This was seen by many as an escalation of the Vietnam War. The National Guard was called in to curb the unrest on campus. After several confrontations between students and guards, the National Guard withdrew and the confrontation seemed to be over. At around 12.25 PM, 28 National Guard members suddenly turned and fired 61 bullets together at a group of about fifteen unarmed students.

all choices are correct

i really do want to but i just don't know it i'm so sorry : (