Identify the INCORRECTLY spelt word in the given sentence and select the option that rectifies the misspelling.
There are difficult times too, especially when the economy takes a dip and we have to lai people off.

The correct answer is Lay.

Let us analyze the given sentence step-by-step to identify the spelling error:
"There are difficult times too, especially when the economy takes a dip and we have to lai people off."

1. "difficult": This word is spelled correctly (meaning hard or challenging).
2. "economy": This word is spelled correctly (meaning the state of a country or region in terms of the production and consumption of goods and services).
3. "dip": This word is spelled correctly (meaning a brief downward slope or drop).
4. "lai": This is a misspelling in this context. The intended phrase is the phrasal verb "to lay off" (meaning to dismiss employees due to economic reasons). Therefore, the incorrect word is "lai" and it must be rectified to "lay".

Comparing this with the given options, the word "Lay" correctly rectifies the spelling of the misspelled word "lai".