A.I. Explanation:

Option 1: "limiting the use of self-service checkouts"

Explanation: The text discusses the challenges supermarkets face with self-service checkouts, particularly the issue of theft and malfunctioning machines. The phrase 'limiting the use of self-service checkouts' directly aligns with the sentiment expressed by supermarket managers who are considering this action due to the significant losses incurred from theft. This option reflects the main idea of the text, which is about the financial implications of self-service checkouts.

Option 2: "increasing the range of fruit and vegetables"

Explanation: This option suggests a strategy that is not supported by the text. The text highlights that the problem with self-service checkouts is related to theft and malfunctioning machines, particularly with fruit and vegetables. Increasing the range would not address the theft issue and is not mentioned as a consideration by supermarket managers.

Option 3: "installing more self-service checkouts"

Explanation: This option contradicts the main idea of the text. Instead of addressing the theft problem, installing more self-service checkouts would likely exacerbate the issue, as indicated by the managers' concerns. The text suggests a move away from self-service checkouts, not an increase in their number.

Option 4: "asking the directors for more money"

Explanation: This option introduces a concept that is not discussed in the text. The focus is on the operational challenges and theft associated with self-service checkouts, rather than seeking additional funding. There is no indication that financial requests are part of the supermarket managers' considerations.