Answer:
D). Use AND between the search terms; cloud AND storage.
Step-by-step explanation:
Boolean search method involves the use of varied operators like AND, NOT, and OR to make combination of the keywords in a restricted manner to generate more effective results. It assists the user to produce more effective results efficiently.
As per the question, the use of 'AND' between the two key search terms like 'cloud' and 'storage' would assist in narrowing the vastness of the topic and aid the user to focus on these two terms only that would help produce the effective results to begin the research. The use of 'OR' would widen the topic more while 'NOT' as a search term will help in emphasizing the specific term later in the research process. Thus, option D is the correct answer.