I. ଶବ୍ଦ ଶବ୍ଦରୁ ଆସିଛି ଯାହା ଲାଟିନ୍ରେ ‘ନୁଆସିଆ’ (nausea) ଅର୍ଥ ସମସ୍ୟା ବହନ କରୁଛି ବୋଲି ଅର୍ଥ କରାଯାଏ।
II. ଶବ୍ଦର ପ୍ରମୁଖ ଉତ୍ପାଦନ ମାଧ୍ୟମ ଯାହା ପରିବହନ ବସ୍ତୁ ଅନ୍ତର୍ଗତ ରେଲ ଶବ୍ଦ, ବିମାନ ଶବ୍ଦ ଏବଂ ଗାଡ଼ି ଶବ୍ଦ ଅନ୍ତର୍ଗତ।
III. ଶବ୍ଦ ଦୂଷଣ ଡିସିବେଲ୍ରେ ମାପାଯାଏ।
A) I ଏବଂ II
B) II ଏବଂ III
C) କେବଳ III
D) ଉପରୋକ୍ତ ସବୁ
ସଠିକ୍ ଉତ୍ତର: D
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