The sentence "She goes to university" does not require an article before the noun "university." When discussing going to school, college, or university in a general sense, articles are usually omitted.

Additional Fact:
Articles are often omitted before certain nouns, especially when referring to places of education or institutions in a general manner.

Explanation:
Use of Articles in Sentences:
- Articles (a, an, the) are used to specify or limit nouns.
- In English grammar, articles are considered as determiners.
- The use of articles depends on whether the noun is specific or general.
Sentence Analysis:
- Option A: "She goes to university."
- In this sentence, the noun "university" is a general noun.
- The use of the article "the" is not necessary before the noun "university" because it is not specifying any particular university.
- Therefore, this sentence does not require an article.
- Option B: "He is president of company."
- In this sentence, the noun "company" is a general noun.
- The correct sentence should be "He is the president of the company" because it specifies a particular company.
- The article "the" is needed before the noun "company" to make the sentence grammatically correct.
- Option C: "They are going to beach."
- In this sentence, the noun "beach" is a general noun.
- The correct sentence should be "They are going to the beach" because it specifies a particular beach.
- The article "the" is required before the noun "beach" to make the sentence grammatically correct.
- Option D: "I want to buy car."
- In this sentence, the noun "car" is a general noun.
- The correct sentence should be "I want to buy a car" because it refers to any car in general.
- The indefinite article "a" is needed before the noun "car" to make the sentence grammatically correct.
Conclusion:
- The sentence that does not require an article is option A: "She goes to university." because the noun "university" is a general noun and does not need an article to specify a particular university.