To predict when the difference between low tide and high tide would be about 7 feet, we should look at the tidal patterns in relation to the phases of the moon.
From the provided data:
- January 1: Full Moon - Spring Tide (7.3 feet)
- January 8: Half Moon - Neap Tide (5.2 feet)
- January 16: New Moon - Spring Tide (7.4 feet)
We observe that spring tides (which occur during full and new moons) have higher tidal differences, while neap tides (which occur during the first and third quarters) have lower tidal differences.
The next full moon after January 16 is on February 15, which would likely produce another spring tide and a tidal height close to around 7 feet, especially given the trend in the data.
Thus, the best estimate for the next date when the difference between low tide and high tide would be about 7 feet is:
C. February 15
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