The use of articles in English is governed by the countability of nouns and the pragmatic context of the discourse, often presenting cases of zero article in formal registers. Analise as afirmativas a seguir:
I. The definite article "the" is generally omitted before names of individual mountains and lakes, but it is required before names of mountain ranges, oceans, and geographic regions like "the Middle East."
II. The indefinite article "an" must be used before words starting with the letter "u" regardless of the phonetic realization, to ensure the graphic stability of the noun phrase in academic publications.
III. Nouns referring to social institutions, such as "school," "prison," or "hospital," take no article when the sentence refers to the primary purpose for which the institution exists.

Está correto o que se afirma em: