The correct answer is: C. Sustained experimental work needed for discoveries is not easily forthcoming.
Research is a continuous critical investigation that involves the collection, analysis, and interpretation of data. It is a systematic process that is used to answer questions and solve problems. Research can be conducted in any field, and it can be used to advance knowledge in a variety of ways.
However, research is not always easy. It can be time-consuming, expensive, and difficult. It can also be frustrating, as it often involves failure and setbacks. Despite these challenges, research is essential for the advancement of knowledge.
Discoveries are rare because they require a combination of factors, including creativity, insight, and luck. They also require sustained experimental work. This work can be difficult and time-consuming, and it is not always rewarded. As a result, many people are not willing to put in the effort required to make discoveries.
In addition, the sustained experimental work needed for discoveries is often not forthcoming because it is not always funded. Research is expensive, and funding is often limited. As a result, many research projects are not completed, and many potential discoveries are never made.
Despite these challenges, research is essential for the advancement of knowledge. It is a continuous critical investigation that can be used to answer questions and solve problems. Research can be conducted in any field, and it can be used to advance knowledge in a variety of ways. Discoveries are rare, but they are possible with sustained experimental work.
Here is a brief explanation of each option:
- Option A: Research is a continuous critical investigation. This is true, but it does not explain why discoveries are rare.
- Option B: It is not common to be able to think beyond a grooved channel. This is also true, but it does not explain why discoveries are rare.
- Option C: Sustained experimental work needed for discoveries is not easily forthcoming. This is the most likely explanation for why discoveries are rare.
- Option D: Most people lack depth of knowledge needed for it. This is not a likely explanation for why discoveries are rare. Many people who make discoveries do not have a deep knowledge of the field in which they are working.