This is a failing essay that will not receive a passing score based on one specific reason. The writer did not respond to the question based upon the given question and format. He changed the main discussion question leading to a total change in discussion slant.
Therefore, the writer, who has an obsession with grammar perfection in his writing and when advising others, showed that he does not understand English instructions well enough to provide the correct response. Good GRA and LR scores are not going to help when the 2 main scoring considerations, TA and C + C have been given failing marks.
The specific scoring error occurred here:
OP:
Do you think is a positive or negative development?
R:
there are many drawbacks to overusing these electronic items.
A P or N discussion should never be interchanged with an A v. D essay due to differing discussion targets in the reasoning paragraphs. This is an error the writer have avoided had he written a proper thesis response and, if he had bothered to compare his response keywords to the original prior to submission. This is why the review and editing of the essay draft is important. This is the section that causes the failing score in the final tally. The discussion provided though written with acceptable grammar is unacceptable for the given original discussion.
One can even compare the original topic against the interpretation to see the full failing score basis
OT:
Some children spend hours every day on their smartphones.
Wl:
Whether chi is a controversial topic nowadays.
There are even more errors to point out in this essay but those would make the review too long. The main point is this, good grammar and knowing some of those rules are not enough to pass the test. English comprehension and proper writing instruction implementation matters the most. Respond incorrectly and the essay will not receive enough marks to reach a base passing score.