Question

complete the text with the best transition.
installing early warning systems can help communities prepare for earthquakes and reduce injuries. ______ the high cost of these systems might not be justified for regions with infrequent seismic activity. however, even rare events can cause devastating damage, making preparedness crucial. therefore, investing in early warning systems, even in areas that rarely experience earthquakes, is a proactive measure that can save lives and reduce the long - term economic impact of disasters.
after all, some claim that additionally, it is clear that

Explanation:

We need to find a transition that introduces a contrasting or opposing view to the previous statement (installing early warning systems is helpful). "Some claim that" is suitable as it presents a counter - argument about the high cost not being justified, which contrasts with the benefit of the systems mentioned before. "After all" is used for giving reasons, "Additionally" is for adding similar ideas, and "It is clear that" is for stating a definite conclusion, so they don't fit here.

Answer:

Some claim that