The correct answer is C. 1 and 3.
The architectural remains of Karna’s fort are located in Kurukshetra district. This is a well-known fact and is supported by historical evidence. The Hansi fort is built on the remains of 7th century which are of Harshavardhan’s period. This is also a well-known fact and is supported by historical evidence. However, the statement that the forts in Haryana have been built on raised platform is not correct. There are many forts in Haryana that are not built on raised platforms. For example, the Badshahi Fort in Rohtak is not built on a raised platform.
Here is a brief description of each option:
- Option A: 1 and 2. This option is incorrect because it includes the statement that the forts in Haryana have been built on raised platform, which is not correct.
- Option B: 2 and 3. This option is incorrect because it includes the statement that the forts in Haryana have been built on raised platform, which is not correct.
- Option C: 1 and 3. This option is correct because it includes the statements that the architectural remains of Karna’s fort are located in Kurukshetra district and that the Hansi fort is built on the remains of 7th century which are of Harshavardhan’s period.
- Option D: 1, 2 and 3. This option is incorrect because it includes the statement that the forts in Haryana have been built on raised platform, which is not correct.