Final answer:
The poet's aspiration in his invocation is to create a powerful and impactful poem that captivates readers with its scope and energy.
Step-by-step explanation:
The student is asking about the sort of "Sweep" that the poet's poem aspires to in his invocation ("Proem"). In this context, the word "Sweep" refers to the scope, power, and impact of the poem. The poet's ambition is to create a poem that encompasses and captivates a wide range of experiences and emotions, sweeping the readers along with its energy. The poet wants the poem to have a profound and lasting effect on the readers, just like the ebb and flow of a river, the beauty of the sunset, and the curiosity of the human mind.