Option 1, HiuenTsang, is not the correct answer. HiuenTsang was a Chinese traveler who visited India in the 7th century, but he was not the first foreigner to visit India.

Option 2, Magasthenese, is the correct answer. Magasthenese was a Greek ambassador who visited India in the 4th century BCE. He wrote detailed accounts of his travels and is considered one of the earliest sources of information about India.

Option 3, I-Tsing, is not the correct answer. I-Tsing was a Chinese Buddhist monk who visited India in the 7th century, but he was not the first foreigner to visit India.

Option 4, Fahien, is not the correct answer. Fahien was a Chinese Buddhist monk who visited India in the 5th century CE, but he was not the first foreigner to visit India.

Therefore, the correct answer is option 2, Magasthenese.