She is not accustomed to ____ like this.

Explanation: She is not accustomed to ____ like this. Explanation: The correct option is 'being treated'. The structure 'accustomed to' is followed by a gerund (verb+ing) form, indicating a habitual action. Option A ('be treated') is incorrect because 'to' after 'accustomed' requires a gerund. Option B ('treat') is incorrect as it is in the base form, not a gerund. Option C ('treated') is in the past tense, which does not fit the context here. Note: The phrase 'accustomed to' demands the gerund form of the verb to indicate a habit or ongoing state.