Researchers claim to have developed new "nano-papers" incorporating tiny cellulose fibres, which they allege give them the strength of cast iron
a)Here why is there ambiguity with they and them, both they and them refer to researchers. First clause subject is Researchers, and in the second clause they and them refer to Researchers.
But in the MGMAT SC Guide , the above sentence has been marked as erroneous.
b)Also I am told if there are pronouns such as they and them in the clause , the pronouns should point to the same antecedent.
In that case how is the below right?
2.A study commissioned by the Department of Agriculture showed that if calves exercise and associate with other calves, they require less medication and gain weight more quickly than those raised in confinement.
they refers to calves
those refers to other calves
But in the first sentence, they and them refers to 'Researchers' only.
3. Is the behavior of pronoun different when they form a part of a different clause in contrast to when they are in the same clause?