The correct answer is: Diksha.
Diksha is a national digital platform for teacher training and learning. It was launched by the Ministry of Education, Government of India in 2017. Diksha provides a variety of courses and resources for teachers, including online courses, videos, and articles. Teachers can also use Diksha to create their own profiles and share their skills and knowledge with others.
Uddan is a non-profit organization that provides aviation training to underprivileged youth. It was founded in 2012 by Captain Gopinath, the founder of Air Deccan. Uddan has trained over 1,000 students so far and has helped them find jobs in the aviation industry.
Gurukul is a traditional Indian system of education. It is a residential school where students live and learn under the guidance of a guru. Gurukuls are often associated with Hinduism, but they are also found in other religions such as Sikhism and Jainism.
The answer to the question is Diksha because it is a portal that helps teachers boost their teaching skills and create their own separate profile with their skills and knowledge. Uddan and Gurukul are not portals that help teachers boost their teaching skills.