Which of the following sites should you use when trying to find country-level data on household income?Third party data agencyQuora / RedditGovernment website

When trying to find country-level data on household income, the most reliable source would be a Government website. Here's why:

1. Government websites: Government statistical agencies collect, analyze, and publish statistical information about various sectors including household income. They have the most accurate and reliable data because it's their responsibility to track this information for policy making and planning. Examples include the U.S. Census Bureau, Statistics Canada, or the Office for National Statistics in the UK.

2. Third party data agency: These can also provide country-level data on household income. However, the data might not be as reliable or up-to-date as government sources. They often gather information from various sources, which can include government reports, but also surveys or estimates which might not be as accurate.

3. Quora / Reddit: These are social media platforms where users can post questions and answers on a variety of topics. While you might find some information related to your topic, it's not a reliable source for accurate and official statistical data. The data here is user-generated and not verified, so it should not be used for serious research or reporting.