search engines can perform date-filtered searches because, when web servers send a webpage to a they include a header that contains information about the webpage, such as the date it was last modified.
a.
browser
b.
search engine’s web robot
c.
either a. or b.
d.
neither a. nor b.

B) Search engine's web robot

Explanation:

 Search engine is basically use the data or information in the webpage and it is also a web base tool which enabled the users for locating the information and data in the world wide web.

It is basically perform various date filtered searches as the web server send the webpage to the search engine web robot. It also include a header which basically contain data in the web page, when it is last modified.

Therefore, Option (C) is correct.

a) click on any cells in the range of data

b) click the data

c) click sort& filter group, click sort

d) select the column to sort by and then select a sort order

e) select the next column to sort by and select the sort order

f) click ok