Answer:
All of these are main types of inventor.
A. True. You never know what the smallest detail may have.
When boating on a river, you might encounter these strainers and the danger of these strainers is that they can possibly trap your boats and throw the passengers out of the boat. Strainer is the term that describes anything that obstructs the way in the river such as logs, or wire fence.
Tough.. Just write a little stick figure guy saying I dunno. :) Hope I helped!
