Answer: Cell-phone usage should be embraced at public schools as a means of information acquisition
Explanation:
An argument topic would be one that suggests something should be done in a certain way or is a certain way. It is therefore an opinion on how things should be done.
From the options, the first cannot be presented as an argument as it is simply a statement of fact. The same goes for the second and third options. The fourth option however, suggest that cell-phones should be used to get information in public schools. It is therefore an opinion and can be presented as an argument.
Answer: if it had not been for the life boat
Coherence in writing is the logical bridge between words, sentences, and paragraphs. Coherent writing uses devices to connect ideas within each sentence and paragraph.
So the best answer would be: the order of ideas enabling the reader to move easily from point to point
