Answer:
I believe it would be C.
Explanation:
The change in the direction is the key factor to look at to find the answer
Hydrogen is in a state of matter as a gaseous form. (so the answer is gas)
Answer:
Research
Explanation:
Research is a deliberate attempt to find answer or solution to a problem along with help of observation, study, survey, comparison, literature review and experimentation.
It is in other way a search for knowledge through systematic way of finding solutions to a problem.
The research methodology comprises of following stages –
Stage I – Observing a problem
Stage II – Formulating a hypothesis
Stage III – Collecting the data
Stage IV – Analysis of facts and data
Stage V – Finding a solution or reaching a conclusion
