Hi.

I have 10 options. Among which, I want respondents to pick up three and mandatorily choose the respective dropdown list of 5 options.
I have read the following theme [url][/url]   github.com/tpartner/LimeSurvey-Multiple-Choice-Dropdown   
But I think the file is not available anymore. Could you please tell me how can I do?

Many thanks in advance.

It is like..
"Please choose 3 products that you have used and tell us how much was your satisfaction with those products?"

Hi,

But I think the file is not available anymore.

I do not see an issue.
Of course it is still available

The obstacle is: It is not compatible with version 6.x.

But you find the file for version 6.x. if you go tpartner's github homepage. Here you'll find it.
 

But now some remarks.
If there are only 10 options, a dropdown is really annoying for the respondent.
He has to click to open it, see which options are available, and again has to click to select the option.

If I see your scenario:
It should be sufficient to use a "multiple" question followed by an "array" to enter the satisfaction (here you use "array filter" to only display the selected products.
Or you use only one array with a last colum ("not applicanle / not used")
Or you use one "multiple with comment" question; in the comment the respondent enters the value of his satisfaction.

Joffm