She is __________ beautiful that everyone admires her.

The correct answer is A: so. The sentence uses the 'so...that' construction, which is employed to express cause and effect or to indicate a high degree of something, leading to a particular result. Here, 'She is so beautiful that everyone admires her' means her beauty is of such a high degree that it causes everyone to admire her. This structure emphasizes the intensity of the adjective 'beautiful.' B: such is used with a noun phrase (e.g., 'such a beautiful woman that...'). Since 'beautiful' is an adjective standing alone before 'that,' 'so' is the correct choice. C: very simply intensifies an adjective but does not typically precede a 'that' clause expressing a consequence (e.g., 'She is very beautiful,' but not 'very beautiful that...'). D: too implies an excessive degree, often with a negative connotation, and is usually followed by 'to' + infinitive (e.g., 'too beautiful to be true'). Therefore, 'so' is the precise word to complete the 'so...that' construction, effectively linking her beauty to the admiration she receives.