Can't answer 'cause you didn't provide an image of the passage.
Answer:
A. Workhouse authorities were extremely careless in their duties
This is because the passage doesn't say anything about children being weak due to poor nourishment nor parishioners wrongly criticizing their own officials, and if the legal system carefully monitored parish affairs then children wouldn't be getting scalded to death or overlooked.
An independent clause and a dependent clause.
An independent clause is a clause that can stand alone as a sentence (i.e., it expresses a complete thought). However, a dependent clause (or subordinate clause) is one that cannot stand alone as a complete sentence because it does not express a complete thought. Cause it is not a complete thought, it is dependent on being attached to an independent clause to form a sentence. The link between a dependent clause and an independent clause will often be a subordinating conjunction or a relative pronoun.
Answer:
0.6 for 3/5, 0.83333 for 5/6