Passage Scientists have developed a gel that helps brains recover from traumatic injuries.
Other/Unspecified aptitude question, verified with a worked answer. Free to practise - no sign-up.
Passage
Scientists have developed a gel that helps brains recover from traumatic injuries. It has the potential to treat head injuries suffered in combat, car accidents, falls, or gunshot wounds. Developed by Dr. Ning Zhang at Clemson University in South Carolina, the gel is injected in liquid form at the site of injury and stimulates the growth of stem cells there. Brain injuries are particularly hard to repair, since injured tissues swell up and can cause additional damage to the cells. So far, treatments have tried to limit this secondary damage by lowering the temperature or relieving the pressure at the site of injury. However, these techniques are often not very effective. More recently, scientists have considered transplanting donor brain cells into the wound to repair damaged tissue. This method has so far had limited results when treating brain injuries. Dr. Zhang's gel, however, can be loaded with different chemicals to stimulate various biological processes at the site of injury.
Question
What kind of brain injuries can be cured according to the passage?
Show answer & explanation
The passage explicitly states that the developed gel has the potential to treat head injuries suffered in combat, car accidents, falls, or gunshot wounds, encompassing all the specific scenarios listed in options A, B, and C.
Step-by-step Derivation:
Step 1: Identify the relevant sentence in the text: 'It has the potential to treat head injuries suffered in combat, car accidents, falls, or gunshot wounds.'
Step 2: Compare the listed injuries in the text to the provided options.
- 'combat' matches Option A (Combat head injuries).
- 'gunshot wounds' matches Option B (Gunshot Injury).
- 'car accidents, falls' matches Option C (Falls and car accidents).
Step 3: Since all three options (A, B, and C) are explicitly mentioned as injuries the gel can potentially treat, the correct comprehensive choice is Option D ('All of these').