Question

___ twelve years, Opal Systems has been designing operating systems for government institutions.
• In
• By
• For
• During

Answer 1

Answer:

During twelve years opal systems has been designing operating system for government institutions

Answer 2

AnswerDuring twelve years, Opal Systems has been designing operating systems for government institutions.

Explanation:

बारह वर्षों के लिए, ओपल सिस्टम सरकारी संस्थानों के लिए ऑपरेटिंग सिस्टम डिजाइन कर रहा है।