Does this sentence contain a misplaced modifier or dangling ?

Do you understand the grammar ?
How it is not correct
Let me explain for you :
Someone suggests (not sure), so he said , but this depends.... = whenever the condition is likely helping, they decide
The decision is still not made ?

Might be better to put this also in the Verbal sub-forum.

How to get better at GMAT Sentence Correction. Look at the non-underlined portion. Hagfish or slime?

The problem with this sort of query is that we are asked to analyze a sentence in isolation, something that would not happen with an official SC question. (As GMATNinja might say, sentences on the exam do not appear in a vacuum.) Someone who was wise to introductory modifier issues that have cropped up in SC questions might cry foul—we cannot be dependent on a forecast, after all. However, if I saw the sentence in a newspaper, I would not write a letter to the editor and demand the paper publish an errata or anything. The context of the sentence allows me to appreciate what the speaker or writer intends to say. In other words, I do not hold even professional writing to GMAT™ standards on a sentence-by-sentence basis. If we wanted to play it safe, we could simply push the participial phrase to the end:

We will decide to go to Washington, D.C., depending on the weather forecast.

There you go. You have to learn to relax your interpretation of sentences somewhat in a non-GMAT™ context, or you will run the risk of going crazy.

Thank you for bringing me into the dialogue.

- Andrew