Which of the following is a free zone in Abu Dhabi?

Masdar City Free Zone is indeed a designated free zone in Abu Dhabi. It is part of Masdar City's broader initiative to promote sustainable business practices and renewable energy technologies. The free zone offers benefits such as tax exemptions and a regulatory framework designed to attract international companies focused on clean technology and sustainability.

This designation as a free zone is significant because it provides businesses with unique advantages, including full foreign ownership, exemption from corporate taxes, and the ability to repatriate profits. These features make it an attractive location for startups and established companies in the renewable energy sector.

The other options mentioned are free zones, but they are located in different emirates. Dubai Internet City is situated in Dubai, focusing on technology and IT businesses. Sharjah Free Trade Zone operates in Sharjah, while Ajman Free Zone is in Ajman. Each of these zones serves its specific market and industry segments, but they do not pertain to Abu Dhabi.