Problem with "grep -R shell command

I put grep -R Arctic multiple times in
https://www.codecademy.com/courses/learn-the-command-line/lessons/redirection/exercises/grep-i
but it doesn’t put a tick mark rather shows wrong with a cross.
How to fix it?

You could try wrapping the expression with quotation marks. Singles would do for this query.
Alterantively did you use the absolute path as per the instructions? Navigating to that directory and using grep -R will only give you the relative paths from your current working directory.

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