The correct answer is A. 10%.
In the 1980s and early 1990s, the performance of Ladakhi students in the state matriculation examination was as low as 10%. This was due to a number of factors, including the lack of access to quality education in Ladakh, the language barrier, and the cultural differences between Ladakhi students and the mainstream education system.
In recent years, there have been a number of initiatives to improve the education system in Ladakh, and the performance of Ladakhi students has improved significantly. However, there is still a long way to go, and the government and other stakeholders need to continue to invest in education in Ladakh in order to ensure that all Ladakhi children have access to quality education.
Option B is incorrect because the performance of Ladakhi students in the state matriculation examination was not as low as 25%.
Option C is incorrect because the performance of Ladakhi students in the state matriculation examination was not as low as 20%.
Option D is incorrect because the performance of Ladakhi students in the state matriculation examination was not as low as 5%.