Answer - Put the Victim on the position of his back and make sure he/she does not move.
Reasoning - Reasoning why the victim probably has to be on his back and reduce movement is because you do not want any internal organs be damage or further cause problems to the victim.
The answer is D, embraces challenges.
The answer to your question is, competent person
It is because the “building” word that denotes infrastructures is a gerund. Gerunds are nouns that came from verbs + a suffix “ing". So in this case, “building” comes from the verb “built" (which implies that something is already done building something) + the “-ing”.