Contrapositive is the negation of both the premise and the conclusion. in the other order
Let's take:
conditional statemet: all men are mortal (if one is a man, one is mortal)
the counterpositive is :
is one is not mortal, one is not a man - this statement is also true.
So, the correct answer is: its counterpositice is also true
A. Sheila ate her lunch in the cafeteria.
Giving you an idea and information about what the dog will be training to do and helps you to understand a little about the hearing ear association
"Today nobody brought his or her instrument" is correct. It is common for people to use "their" in a sentence like this, but "his or her" is the more proper term.