In each of the questions given below, four sentences have been given. Out of four sentences, one sentence has an error. Find out which of the following sentence has an error. If all the given sentences are error-free then choose option ‘ All are correct’ as your answer choice.

To solve this question, we need to analyze each given sentence carefully for grammatical correctness.

Option Analysis:

1. "Adversity in childhood can contribute to depression in adulthood."
This sentence is grammatically correct. The subject "Adversity" agrees with the modal verb phrase "can contribute to", and the prepositions and nouns are used properly.

2. "Supporters praise the BRI for its potential to boost the global GDP"
This sentence is grammatically sound. "Supporters" (plural subject) pairs correctly with "praise" (plural verb), and the structure "for its potential to boost..." is standard English.

3. "The first country to receive a World Bank loan was France in 1947."
This sentence contains no grammatical errors. The word order, tense, and historical factual context phrasing are all correct.

4. "The bag had a hole, which allowing the sugar to fall off."
This sentence contains a grammatical error. The relative clause introduced by "which" requires a finite verb to act as its predicate. Using the present participle "allowing" without an auxiliary verb is incorrect.
To correct the sentence, "allowing" should be changed to the past tense verb "allowed" (or "was allowing"): "The bag had a hole, which allowed the sugar to fall off."

Therefore, the sentence containing an error is: "The bag had a hole, which allowing the sugar to fall off."