21. What can be inferred about Daylight Savings Time?

Answer: A

Explanation:

Daylight Savings Time will be modified starting in 2007.

In 2007, adjustments to Daylight Savings Time were implemented, changing when the time shifts occur in March and November. This modification indicates a significant alteration to the existing system of timekeeping in the United States.

A) It will be modified starting in 2007.

This option is correct because the extract explicitly states that as of 2007, the time adjustments for Daylight Savings Time occur earlier in March and November, indicating a modification of the previous system.

B) It will be canceled right after the end of 2007.

This option is incorrect. The extract does not mention any plans to cancel Daylight Savings Time after 2007. Instead, it focuses on the modifications made to the timing of the shifts.

C) It will be replaced with Standard Time in March 2007.

This option is also incorrect. The extract clarifies that Daylight Savings Time adjustments were modified, not replaced with Standard Time. The distinction between these two timekeeping methods remains intact.

D) It will be adjusted shortly before the start of 2007.

This option is incorrect as well. The adjustments to Daylight Savings Time were established as of 2007, rather than being adjusted shortly before that date. The timing of the changes is specifically noted in the context of the year 2007.

Conclusion

The correct answer, indicating that Daylight Savings Time will be modified starting in 2007, is supported by the information provided in the extract about changes in the timing of clock adjustments. All other options fail to accurately represent the context and content of the extract regarding Daylight Savings Time.