Correct Answer:
C. 30 years
Explanation:
The correct answer is 30 years because this period spans the leadership of the first four Rightly Guided Caliphs after the Prophet Muhammad (SAW).
- Step 1 (Timeline): The Caliphate began in 632 AD with Hazrat Abu Bakr (RA) and ended in 661 AD after the martyrdom of Hazrat Ali (RA).
- Step 2 (The Caliphs): It includes the rules of Hazrat Abu Bakr (2 years), Hazrat Umar (10 years), Hazrat Uthman (12 years), and Hazrat Ali (5 years), totaling roughly 29 to 30 years.
- Incorrect Options:
- 10 years is incorrect as it only matches the length of Hazrat Umar's individual caliphate.
- 20 years and 40 years are incorrect numbers that do not fit the historical timeline of this era.