Read the four sentences below and identify the one that contains a grammatical error. If all sentences are grammatically correct, select 'All are correct' as your answer.

Select the option containing the sentence with the error.

Correct Answer: The annual film festival demonstrated how a major cultural exhibition should been organized with systematic coordination.

Explanation:

Let's analyze the grammatical structure of the selected sentence to identify the error:

1. In the phrase "should been organized", the modal auxiliary verb "should" must be followed by the base form of the auxiliary verb, which is "have", when forming the modal perfect passive structure (should + have + been + past participle).

2. The correct phrasing should be "should have been organized".

3. Now let's review the other sentences to verify that they are grammatically correct:

• "With the rise of social media platforms, the lives of celebrities became more transparent to the general public." — Grammatically correct with proper prepositions and past tense verb usage.

• "The global demographic trends indicate that the rate of urbanization will accelerate significantly over the coming decades." — Grammatically correct in subject-verb agreement and future tense verb usage.

• "The domestic equity market is monitored by the regulator with stringent insider trading restrictions." — Grammatically correct passive voice construction.

Therefore, the sentence containing the grammatical error is indeed: "The annual film festival demonstrated how a major cultural exhibition should been organized with systematic coordination."