Can someone exlain why is this a best move?

2qr1rk1/p7/1p1Nb3/4P2p/P1BQ1ppn/1P6/5P2/3RR1K1 w - - 0 1

Why is Qe4 a best move?

If you take your opponent's queen with your knight, your opponent plays Nf3+ forking your king and queen(and rook), so common sense is to move the queen out of the way, and Qe4 keeps the queen in the middle

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