Which of the following are explicit indicators?
a. intentional obvious conclusions
b. always, never, and sometimes
c. fact and opinion
d. because, for, and since
An explicit indicator is a word that refers to something explicitly, so not implicitly stated. In order to judge this a context is needed, but I think that the best answer is d: when you use this words you refer explicitly to the cause or reason:
I am here since you called me: the reason is explicit. You called me; I am here: the reason in implicit.
