Hey there friend!
So, when this question says "Analyze the foot". Let's stop there, the key point in this little question would be the word "foot".
When finding the "foot" or the point or even the root of something, which in this case the word "Blatant", we would want to find the deep roots in this, the (true) and straight forward meaning of this following word.
(Blatant).
The foot of this word would be: (Bad Behavior).
The proper definition of this word would be unashamed, or even in today's world, being a "savage" would also be a synonym of this word.
I Hope this helps you Daniel!
I'll explain it in my own words..
The main theme of the poem is what the poem is mostly about. It teaches you about the moral and the life lesson you can learn from the poem.
Textual evidence is used to add credibility to a claim or argument. It shows people how you came to an answer.