I guess it's refering to the "introducción", which means the "introduction", but maybe it refers to the beginning of the actual lesson and not the class, so it could be "explicación", which means "explanation".
C. dos mil euros, does millones de euros
Hope this helped!
True
It borders the Pacific Ocean, Guatemala, and Honduras
' Does he/she need to use these napkins'
There are different ways to say it, some people from other countries would say 'Do you need to use these napkins' but looking at the conjugation, I say it is 'he/she'
Hope this helps :)