Idioms: how to use 'agree'

[Jack78]

Hi team, this is my very first post in Manhattan forum.
On P145 of 5th SC, a sample Wrong sentence of 'Agree' is

Electrons are particles physicists AGREE THAT EXIST.

Why is this sentence wrong? My take is, this sentence is essentially
Electrons are particles that exist.

"Physicists agree" is the modifier to 'particles'. So the sentence looks good to my eyes and sounds well to my ears. :-)

Would you please shed some light on this?

(hope this post has well observed all the forum rules)

[RonPurewal]

Hi,

Welcome to the forum. But please read the rules before you post.

This is the wrong folder for this question. Questions about strategy guide material belong in the MGMAT non-CAT folder.

Please re-post this query in the appropriate folder. Thank you.