The correct answer is option 'C' - Only D and E.

Sanskrit and Hindi are considered as Indo-Aryan languages. Let's understand why.

1. Sanskrit:
Sanskrit is an ancient language that belongs to the Indo-Aryan branch of the Indo-European language family. It is regarded as the classical language of India and is considered the mother of many modern Indian languages, including Hindi. Sanskrit has a rich literary tradition and is known for its precise grammar and extensive vocabulary.

2. Hindi:
Hindi is one of the modern Indo-Aryan languages that evolved from Sanskrit. It is the official language of India and is spoken by a significant population in India and diaspora communities worldwide. Hindi is written using the Devanagari script and has a diverse body of literature and cultural heritage.

3. Persian:
Persian, also known as Farsi, is not an Indo-Aryan language. It belongs to the Iranian branch of the Indo-Iranian language family. While Persian has influenced some Indo-Aryan languages, including Hindi, through historical interactions, it is not considered itself an Indo-Aryan language.

4. Germanic:
Germanic is another branch of the Indo-European language family, but it is not related to Indo-Aryan languages. Germanic languages include English, German, Dutch, Swedish, and others. While English has borrowed words from Sanskrit and Persian, it does not make English an Indo-Aryan language.

5. Spanish:
Spanish, also known as Castilian, is a Romance language that belongs to the Italic branch of the Indo-European language family. It evolved from Vulgar Latin and is spoken by millions of people worldwide. Spanish is not related to Indo-Aryan languages like Sanskrit and Hindi.

In conclusion, only Sanskrit and Hindi are considered Indo-Aryan languages. Persian belongs to the Iranian branch of the Indo-Iranian language family, Germanic languages belong to another branch, and Spanish belongs to the Romance language family.

Modern Indo - Aryan languages are descended from old Indo-Aryan languages such as early sanskrit , through middle Indo - Aryan languages (or Prakrits). The largest in terms of L1 speakers are Hindu - Urdu (about 329 million), Bengali (242 million), Punjabi (about 120 million), Marathi (about 112 million), Gujarati (60 million), Rajasthani (58 million), Bhojpuri (51 million), Odia (35 million), Maithili (about 34 million), Sindhi (25 million), Nepali (16 million), Assamese (15 million) and other languages, with a 2005 estimate placing the total number of native speakers at nearly 900 million. I think you understand this.