I would say B) run because it makes the most sense with the sentence given (past tense)
<span>close observation, especially of a suspected spy or criminal.</span>
Answer:
1.Identify the problem you are researching on
2.Review the literature of the past work or related work on that same research
3.clarify the problem
4 clearly define term and concepts you would like to use to undergo your finds and draw you conclusions
5 define you population or target group
Explanation: