Answer: TableScan[3]

The question asks which highlighted node is the MOST expensive in the Query Profile. According to Snowflake documentation referenced in the community discussion, the 'Execution Time' metric in Query Profile shows which processing tasks consumed the most query time. The community consensus (100% of answers) and upvoted comments indicate that TableScan[3] (option D) is the correct answer. This is because TableScan operations are typically resource-intensive as they involve reading data from storage, and the specific TableScan[3] node shown in the profile has the highest execution time among the highlighted nodes. The other options (Aggregate[1], Join[5], and TableScan[2]) are less expensive based on their execution time metrics in the Query Profile.

Author: LeetQuiz Editorial Team