SOLUTION
Given the question in the image, the following are the solution steps to answer the question.
STEP 1: Define the mode of a set of data
When it's unique, the mode is the value that appears the most often in a data set. Mode: The most frequent number—that is, the number that occurs the highest number of times.
STEP 2: identify the mode of the given set of data
Hence, the mode is identified as 1: