Answer:
B. "They could not speak enough English to ask for advice, or even to make their most pressing wants known."
Explanation:
The statement above is likely reffering to immigrants to an English-speaking country.
Immigrants tend to have issues acquiring the language of their host country, especially if they are older, because it has been proven by science that children and yount people in general learn new languages more easily than older people.
For native older people, seing immigrants who do not have a very good understanding of English, to the point that they are not able to communicate their most basic needs, can be frustrating, therefore, the statement in the answer supports the theme in the question.