I was reading the other questions about how flags now convert to close votes since I just breached 3k rep, and I was wondering -- does this mean I am no longer eligible to obtain the Marshall Badge (500 flags)? I'm at 142 right now and I'm kind of bummed out to hear that I might not be able to get the badge anymore.
You will still be able to get it, by flagging answers.
"Closing" applies to questions; answers aren't "closed" or "put on hold". Answers can be deleted, but this is different from closing/putting on hold.
When a question is closed/put on hold, one can no longer answer it. Since answers are not answered in turn, "closing" an an answer or "putting an answer on hold" would not make sense.