There are four highlighted words in the sentence given below. One of them is misspelt. Choose the option with the misspelt word.
Despite the continuous fluktuation in commodity market prices, the executive committee delayed the scheduled expansion and advised investors to exercise patience throughout this critical period.

The correct answer is fluktuation.

Let us analyze the spelling of the options given in the sentence:
1. critical: Correctly spelt. It means of decisive importance or playing a crucial role.
2. investors: Correctly spelt. It refers to persons or organizations that put money into financial schemes, property, or business projects with the expectation of profit.
3. scheduled: Correctly spelt. It means planned or arranged to take place at a specified time.
4. fluktuation: Misspelt. The letter 'k' is incorrectly used here. The standard English spelling is fluctuation.

Fluctuation refers to an irregular rising and falling in number, level, or amount. Therefore, fluktuation is the word with the spelling error.