In the following question, a short passage is given with one of the lines in the passage missing and represented by a blank. Select the best out of the four answer choices given, to make the passage complete and coherent.

The news bring in a new case of sexual assault or exploitation, every other day. ____________________ Yet, the conviction rate remains deplorable. Be it social pressures, political complications, negligent law enforcers or a host of many other problems, hinder the much deserved and long required quick justice. Psychology states that for punishment to work, one crucial factor is for it to be quick and fitting the crime. Unfortunately, unless that happens, there will be a continuing downward spiral of events.