Directions: In the following question, four words are highlighted in bold. Identify the word that is incorrectly spelled. If all words are spelled correctly, select 'No error'.

The primary aim of the project is to achieve a clearer understaning of economic growth dynamics.

The correct answer is understaning.

Step-by-Step Explanation:

1. Analyze the sentence: Read the given sentence carefully: "The primary aim of the project is to achieve a clearer understaning of economic growth dynamics."

2. Examine the spelling of each highlighted word:
• primary: Spelled correctly. It is an adjective meaning main, principal, or chief.
• achieve: Spelled correctly. It is a verb meaning to successfully reach or accomplish a desired goal.
• understaning: Misspelled. The correct spelling of this noun is understanding, which requires the letter 'd' between 'n' and 'i'.
• dynamics: Spelled correctly. It refers to the forces or processes that produce change within a system.

3. Conclusion: The word understaning contains a spelling error and is therefore the correct choice.