Copy question
From LimeSurvey Manual
Introduction
How to copy a question
First, look for the copy button located on the top question toolbar:

Once clicked, the following window will load up:

The most important setting is represented by the question code/id which is highly recommended to be different than any other existing question code from your survey.

Copy options
The copy options tab is located on the right side of the screen:

- Copy subquestions?: if enabled, the question subquestions will also be copied;
- Copy answer options?: if enabled, the answer options will also be copied;
- Copy default answers?:: if enabled, the default answers will also be copied;
- Copy advanced settings?: if enabled, the advanced settings will also be copied.

General options
The general options tab is located below the copy options tab:

The options displayed under this tab vary in accordance to the selected question type. The only option that is unique is "Position", which allows you to select the localization of the newly created question (see the last sine from the above screenshot).
Once done, click on the save and close button located in the upper right part of the screen to copy the question.