Answer:d. reliability.
Explanation:Research reliability refers to the fact that a research method yield stable and consistent outcome.
This means the same method can be used multiple times but still produce the same outcome such as when a professor asks the same question twice but only changing the structure of the question.
It’s B he developed the scientific method
Answer: Sir George Airy
Explanation: The prime meridian is a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. It was first established by Sir George Airy in 1851, and by 1884, over two-thirds of all ships and tonnage used it as the reference meridian on their charts and maps.
The rebellions that erupted throughout Latin America to overthrow Spanish colonial rule, left Mexico with an array of problems that touched upon events in the far northern Mexican province of Texas. Economically, the country faced devastation in 1821. It stood in marked contrast to the rich colony that had promised great potential towards the end of the colonial era. Money barely circulated. Once-rich mines struggled to regain their former efficiency. Ranches and farms were no longer productive. With the economy in shambles, thousands faced unemployment. Entire areas experienced depopulation as people sought out a livelihood elsewhere. Moreover, differences over class distinctions split the nation as the landed gentry, the military, and church officials sought the preservation of the antebellum order, wherein they ruled alongside government. Additionally, many of the country's new leaders had had little prior experience in governing.
