Answer:
The correct answer will be option-C.
Step-by-step explanation:
A scientific method is the systematic approach to understand and explain the natural events and phenomenon.
The method begins with making the observations which could lead to the formation of a scientific question. Background research is done based on which a predicted hypothesis is proposed which could be tested through the scientific experiments.
In the given question, student makes an observation on the basis of which he formulate a question. He do not review the background research on the question and directly formulates the hypothesis and follow other steps.
Since his method lacks the background research therefore, option-C is the correct answer.