Question

indexes are a nonfiction text feature.
what page tells about cordless telephones?
page 17
page 27
page 51
page 14
index
a
about cordless telephones 51
advanced operation 17
answer an external call during an intercom call 15
answering system operation 27
b
basic operation 14
battery 9, 38
c
call log 22, 37
call waiting 14

Explanation:

Check the index for "About cordless telephones" which is on Page 51.

Answer:

Page 51