Without hearing a word of what is being said or shouted, an experienced trader on the floor of the stock exchange can listen to the hum of voices around
them and tell what is happening.
The non-underlined part has "them". So the underlined part should have a plural object. Here the plural object is "experienced traders"
Quote:
(A) Without hearing a word of what is being said or shouted, an experienced trader
This can be eliminated comfortably as an experienced trader cannot listen to hum of voices around them.
ELIMINATEDQuote:
(B) Without hearing a word of what is being said or shouted, experienced traders
Precise and best among the lot.
CORRECTQuote:
(C) Even though the person has not heard a word of what is being said or shouted, an experienced trader
same error as in option A.
ELIMINATEDQuote:
(D) Even when the person has not heard a word that is being said or shouted, experienced traders
the first part is saying the person and it is referring to experienced traders. Pronoun error.
ELIMINATEDQuote:
(E) In spite of not hearing a word of what is being said or shouted, an experienced trader
same error as in option A.
ELIMINATEDOPTION:
B