A. Imported into Massachusetts from Europe in 1869,the gypsy moth was used by a
French scientist in anattempt at developing a strong strain of silk-producing
insects,crossing gypsy moths with adult silkworms .
First of all, the correct idiomatic usage is attempt TO, not attempt AT.
Second, the comma verb-ing seems to suggest that moth themselves are crossing the moths
B.Imported into Massachusetts from Europe in 1869,a French scientist was
attempting to develop a strong strain of silk-producing
...
French scientist in anattempt at developing a strong strain of silk-producing
insects,crossing gypsy moths with adult silkworms .
First of all, the correct idiomatic usage is attempt TO, not attempt AT.
Second, the comma verb-ing seems to suggest that moth themselves are crossing the moths
B.Imported into Massachusetts from Europe in 1869,a French scientist was
attempting to develop a strong strain of silk-producing
...
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