What is the official language of Germany?
A. English
B. French
C. Dutch
D. German

Hint- This language is mainly spoken in Central Europe. It is the second most widely spoken language after English. It is also referred to as the co-official language of Luxembourg and Belgium.

Complete answer:
The official language of Germany is known as German. About 95 percent of the people in Germany speak it. High German refers to the old type of German. The people of Germany also speak languages such as Bavarian, Limburgish; Luxembourgish; Alemannic; and Danish. Minority languages
include Sorbian, which is spoken by around 0.09% in the east of Germany, and North Frisian
spoken in Nordfriesland by approximately 10,000 people, or 0.01%, who also do speak
German. Basically, German is an inflected language having four cases for nouns, pronouns,as well as adjectives (nominative, accusative, genitive, dative), along with three genders (masculine, feminine, neuter), and strong and weak verbs. Altogether, German refers to the native language of above 90 million speakers and hence it ranks among the languages that have the most native speakers worldwide. German is majorly studied as a foreign language and is also one of the primary cultural languages of the Western world. In accordance with the written language, German is quite uniform as it differs in Germany, Austria, and Switzerland no more than written English does in the United States and the British Commonwealth. Referring to German as a spoken language, however, German exists in many dialects, most of which belong to either the High German or Low German dialectal groups. The main difference between High and Low German is in the sound system, mainly in the consonants. High German, which is the language of the southern highlands of Germany, refers to the official written language.

Thus, Option D is the correct answer.

Note- Until the middle of the 20th century, German was written using a different script of the Latin alphabet. The script was known as the Fraktur script. This form of Gothic script was introduced during the 16th century and remained in use until the Second World War.