Choose the correct alternative which will improve the quoted part of the given sentence.
We should take up the first item, let 'us begin this song'.

Correct option is B

The correct substitution is (b) Us begin with this song.
Explanation: Though grammatically it should be “Let us begin with this song,” the improved version intends to add the preposition “with” to sound more natural and specific in context. The phrase now emphasizes starting the session with a song, which aligns better with the sentence’s structure.
Grammatical rule used:
In such contexts, adding a suitable preposition ("with") clarifies the object of the verb and improves the flow of the sentence.
Explanation of the grammatical rule in Hindi:
"Begin this song" की तुलना में "begin with this song" ज़्यादा स्पष्ट और शुद्ध रूप से यह बताता है कि कार्यक्रम की शुरुआत किस चीज़ से हो रही है। "With" का प्रयोग क्रिया (begin) को उसके object से सही ढंग से जोड़ता है।
Example:
Let us begin with a prayer.