The correct option is D Sheena is my English teacher.
The basic order of words in a sentence is: subject + verb + object.
A sentence may not contain an object, depending on the verb. Transitive verbs like 'appear', 'die', etc do not require objects.
To
this basic structure, different elements can be added. For example,
noun phrases, adjective phrases, subject complements, types of clauses
and so on.
Option C: The structure in this sentence complies with the basic structure:
subject
(Sheena) + main verb (is) + subject complement
(my English teacher).
Hence C is correct.
Option A: The complement has taken the place of the subject and vice versa. Hence this isn't the correct order.
Option B: Similarly, the order of words here isn't correct either. The error lies in 'Sheena English'. (a proper noun is not followed by an adjective of nationality)
Option D: The order is a jumble of words which do not form a coherent meaning.
Hence options A, B and D are incorrect.