GMAT Sentence Correction (SC) | Re: Horses have a unique system of interlocking ligaments and bones

Hi kparik86,that is not correct:).

Here is a significant flexibility thatthat has, in terms of what it modifies. For example, in the following official question:

Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become precisely the opposite, a tool for communicating with a large, public audience.

that is clearly modifyingtool (and notprivate conversation ).

p.s. Our book
...

---