Which sampling site had the highest proportion of heavily infected monarchs? A. Mexico
B. Guif Coast
C. Northern United States
D. South America

The correct answer is option D "Mexico"

Explanation:

In February 2008, we gathered grown-up rulers at two discrete overwintering destinations in the Neovolcanic Piles of Focal Mexico:

(I) Sierra Chincua  

(ii) Cerro Pelon.

The two locations are situated in Michoacan, Mexico. Butterflies were gathered utilizing standard flying nets with expandable posts.

The commonness of monarchs vigorously infected with OE at every one of these two areas in 2008 was 14.4 and 13.6%.

From ten imitate bunches (five groups for every site), we arbitrarily chose sound and tainted butterflies following starter screening of parasite tests in the field, for a sum of 75 solid and 100 intensely infected monarchs.

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i think the answer is b.