Why did Israel invade Lebanon in 1982? to attack PLO bases in southern Lebanon
to attempt to end Lebanon’s civil war
to drive Syrian troops out of Lebanon
to aid Shllte militias in the civil war

Your answer is to attack PLO bases in southern Lebanon.

Explanation:

According to Avi Shlaim one of his aims was the destruction of PLO military infrastructure in Lebanon and undermining it as a political organization, in order to facilitate the absorption of the West Bank by Israel. Hope this helped and I'm sorry the answer is late :)

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