Sentence 4 should be revised to incorporate strong supporting evidence.
Answer: Option 3.
<u>Explanation:</u>
The paragraph talks about the universal health care that how expensive it is becoming. Even though it is one of the most important things in the life of the people but still it is becoming expensive and as a result becoming inaccessible for a lot of people in the world.
The WHO (world health organisation) recommends spreading the costs of health care across the population, so no one is overly burdened with the cost of the health care and it is accessible to all. If a responsible organization like the WHO says it is possible to divide the cost of health care, then worldwide governments should implement universal healthcare immediately and take steps in this direction.
<span>"So-called anonymous tracking is not very secure—the anonymity is fairly easily broken. Cracking [it]...is a fairly easy engineering feat."
This example maintains the main idea of the passage, keeping its message in tact while eliminating information using ellipses to improve clarity. The addition of "it" also helps make it clearer and more concise. </span>
