Answer: A.
According to science may at first sound like an opinion but it is in fact drawing facts from data etc.
B is a conclusion from D. C is also drawn from D, which leaves only A.
Also, A kind of sounds like a conclusion because they have started with "its obvious that", almost as an attempt to defend what they are trying to say!
Answer:
In Morse code, letters of the alphabet and other characters like numbers can be represented as sequences of binary numbers, although each bit in the sequence is sometimes called a “dit” or a “dah”. In writing, a “dit” is represented by a dot (.), and a “dah” is represented by a dash (-)
yw
Her weakness —achilles heel, was her love of chocolate