Answer:
D. to show the sequence of reasons.
A author may use words such as "first, additionally, furthermore, finally" to show the sequence of reasons.
Let me know if this helps!
Answer A makes sense for me
the other sentence is B therefore
because therefore means so
my teacher was very ill therefore (so) a substitute was called to finish the day
The first choice would be the correct answer it makes more sense and goes along with the story
Count nouns:book, umbrella,friend
non-count: knowledge, rain,happiness
