Which situation identifies hundreds of unarmed people, including children, being gunned down?A) at the Berlin Wall B) by electrician Lech Walesa C)...

If you are operating out of a textbook or class syllabus,
I would go back to these elements first.  Any other options should be taken as
secondary.  For me, I think that there is a process of elimination.  Option B is out
because Lech Walesa was a freedom fighter in Poland and was not in the position of power
to gun down anyone.  The first option is vague in its own right because "the Berlin
Wall" is not an event.  It's a symbol where individuals were shot and threatened, but
the manner of the question seems to imply an event where these elements happened.  I am
not convinced of letter C because while there was undoubtedly death involved in the
building of the Canal, it does not seem to me that the building of the Canal was done
with the element of "gunning down" children, and unarmed people.  In my mind, I think
option D is the best answer.  The "children" element in the question can be broadened to
include university aged children, and I think that the Chinese government's response to
protesters at Tianmen Square was to gun down protesters.  The protesters lacked any
significant artillery and the response of tanks and troops entering the Square and
opening fire would be more in line with the basic premise of the
question:

The
CRI broadcasted 'several thousand people, mostly innocent citizens' had been killed by
'heavily armed soldiers."