Select the most appropriate option to fill in blank no. 5.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4, i.e. “required.”
The sentence reads:
A framework for developing practical home strategies to manage risk from infections is (5) _____.
To convey that such a structure must exist, the adjective “required” is the best fit. It expresses the necessity of having a framework in place to manage infection risk at home.
Supporting evidence from public health sources confirms this need:
One review states that hygiene information “offers a framework for developing practical home strategies to manage risk from infections”, emphasizing the essential role of such frameworks.
Another discussion underscores that a risk-based approach provides a framework for developing effective behavior—reinforcing the idea that these frameworks are required for success.
The other options don't fit contextually:
Ineffective describes quality, not necessity.
Risky suggests danger, not purpose.
Impossible implies inability, which contradicts the positive sense of structuring strategy.