In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
South Korea is the most cosmetically (1)______ country on Earth. Beauty editors estimate that it is because of the government’s heavy investment (2)______ industry. It is ahead of its competitors, and its citizens (3)_____ twice as much on skincare products as consumers in the United States, the UK, and France. Korean shoppers are (4)______ the world’s most discerning. Eight out of 10 Korean women in their 20s and 30s use an app that (5)_____ like a cosmetics-specific, to debate the merits of various common ingredients.
Select the most appropriate option to fill in blank number 4.