Ur answer should be C and D. Hope this helps.
Answer:
A.) Alexander Graham Bell invented the telephone.
Explanation:
I do some research about common nouns, and i think A is the right answers
The study of the structure an behaviour of the physical and natural environment by oberseving through scientficic instruments and through experiments.
I don't what it says can you right your question in the comments
The answer is A because it is the only sentence with a conjunction
