Réponse :

B. an opportunity : a chance (l.27)

   dark : bright (l.32)

D. It : the non-governmental association called Bayti

   Many of them : street children

E. Chart 1 :

Place : streets

Causes : because they have no home or family

Consequences : They are easy targets for street violence, child                                           labor, drug addiction, and all kinds of exploitation.

Chart 2 :

Association : Bayti

Type : non-governmental

Founder : a group of volunteers

Goals : Give them an opportunity to be re-integrated in the school system, family life, and the society they 're part of at large.