What is the most difficult part about using video
conferencing platforms?

This is an opinion but wifi connection and getting everyone on at the same time

Explanation:

Personally, my wifi is really bad so its hard to have successful video conferences. Also if someone is busy and can't make it for personal reasons. Or finding a quiet place to work.

in "letter from a birmingham jail," king argues that there are four basic steps in any nonviolent campaign: "[c]ollection of the facts to determine whether injustices exist; negotiation; self purification; and direct action." finally, direct action is taken and acts such as boycotts and sit-ins are staged.

gerund phrase: writing a short story.

noun use: subject.