Read the passage.

britain's policy of internment came into force in may 1940. this affected older child refugees who had reached the age of sixteen before 1940. these children found work in agriculture and domestic service or joined the pioneer corps and other auxiliary services. only a small number were interned.

each year presented the r. c.m. with new challenges which meant changes in policies and changes within the organisation. questions of finance, welfare and religious upbringing were issues which aroused criticism and conflict. although its main aim was to re-unite the refugee children with their parents, as the war continued and news of the persecution and mass murder of the jews reached the united kingdom, it became apparent this was becoming increasingly unlikely. re-emigration became uncertain.
which excerpt from the passage best supports the inference that the reunification of refugee children with their families was uncertain?

"…as the war continued and news of the persecution and mass murder of the jews reached the united kingdom, it became apparent this was becoming increasingly unlikely."

"questions of finance, welfare and religious upbringing were issues which aroused criticism and conflict."

"britain's policy of internment came into force in may 1940. this affected older child refugees who had reached the age of sixteen before 1940."

"these children found work in agriculture and domestic service or joined the pioneer corps and other auxiliary services."