Which of the following could be considered an unreliable source of information?
A.
a book review
B.
a medical dictionary
C.
an encyclopedia article
D.
a film based on a true story

A. Book Review

Explanation:

Its a review of a book, not the real thing

answer: look i dont mean

explanation: nooobras

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.