Solution:
Any noun that cannot be enumerated is considered an Uncountable noun. 'Sand' is the right option because it is uncountable. While 'feet' is a Countable noun, 'good' is an adjective, and 'the' is an article.
"The feel of the sand against her feet bought good summer memories to mind."
What is the uncountable noun in this question?
Any noun that cannot be enumerated is considered an Uncountable noun. 'Sand' is the right option because it is uncountable. While 'feet' is a Countable noun, 'good' is an adjective, and 'the' is an article.