The tiny Pacific island of Pitcarin is not unaided in her field of education because ______.

A．learning is no longer the right of a select group of people
B．very few people are illiterate
C．exchange of knowledge is now universal
D．special learning should not be left to a few people

A．if someone is going to approach a stranger
B．whether someone is ready to speak to someone approaching
C．if someone is willing to make friends with a stranger
D．whether someone is pleased to introduce him/herself to a stranger