During the 8th - 14th centuries, in the Sanskrit texts and inscriptions, Muslims were denoted using multiple terms. The correct answer to the question is option 1, which includes the terms 1, 2, and 3.

1. Turushka: This term was used to denote Muslims. It originated from the word "Turk" and referred to the Turkic Muslim invaders who had a significant influence in the region during that time.

2. Tajika: This term was also used to denote Muslims in the Sanskrit texts and inscriptions. It is believed to have originated from the word "Tajik," which referred to the Arabic-speaking Muslims from Persia and Central Asia.

3. Parashika: This term was another way of referring to Muslims in Sanskrit texts and inscriptions. It is derived from the word "Parasika," which meant "Persian," indicating the Muslim influence from Persia during that period.

Option 2 (including term 4) is incorrect because "Kardamaka" is not a term that was used to denote Muslims in the Sanskrit texts and inscriptions of that time.

So, the correct answer is option 1, which includes the terms 1, 2