Answer: Because Antonio Meucci was a trained engineer, he was able to invent a “talking telegraph.”
Explanation: This is the correct answer because the cause of his invention is the fact that he is a trained engineer, and the effect is the creation of the talking telegraph.
Even though you didn't give us the fragment with the comma slice, it isn't really necessary here as we can answer just based on these 4 options here. All options apart from the second one are correct - only the second option doesn't fix the mistake of the comma splice, whereas the other options do but connecting the sentences properly.
It’s comparing the difference in water and the water life in the gulf of Mexico and the Mississippi flood waters
B
Data mining
B
The answer is b
B becuse he told them to throw tea in boston harbor