D&D 5E Animate Trees Question

[Stalker0]

I wanted to check. So animate trees says its a treant except that it only gets the "Slam" option.

Does that mean it gets a single slam, or it can take multiattack but only can use slam with it (and no other options like animating more trees).

 

[Jediking]

Slam only.

the wording specifies the Tree gets the “Slam action option”, not the Multiattack action