Answer:
Is the the technology of the device known by you?
The answer would be the last one, leave it as is. B and C change the meaning of the sentence entirely, while A sounds unnatural and is too verbose.
Hope this helps! :)
Answer:
The answer would be ''usually contains'', not contain,
Explanation:
This is the correct version.
''Saag paneer- an Indian dish made with greens, cream, and paneer cheese-
usually <em>contains</em> spinach in the United States; in India, however, the dish is
often prepared with beet, collard, fenugreek, or mustard greens,''