Is a combination of online research tools that provides online-based information services in subject areas such as business, science, engineering, finance, and law and in a format to meet the needs of a wide range of users.
a.
project gutenberg
b.
google books
c.
proquest dialog
d.
dow jones factiva

Option (c) is the correct answer of this question.

Explanation:

ProQuest Dialog is a mix of online research resources that provide online information services in topics such as business, science, engineering, finance, and legislation is known as ProQuest Dialog.The powerful search interface of Dialog enables multi-file search of authoritative material to satisfy literature review and analysis requirements.

Formed in 1966 and procured in 2008 by ProQuest,

ProQuest Dialog doesn't include a mix of gutenberg project, google books and Dow Jones Factiva.

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