clock60 wrote:Found even in ancient Egyptian mummies, the parasitic Guinea worm became the focus of a global public health campaign in 1986; this species of parasite has declined for two decades, and may finally be eradicated from the earth by 2010.

a) Found even in ancient Egyptian mummies, the parasitic Guinea worm became the focus of a global public health campaign in 1986; this species of parasite has

b) Being the focus of a global public health campaign since 1986 and found even in ancient Egyptian mummies; the population of the parasitic Guinea worm has

c) Having been the focus of a global public health campaign in 1986, it was found even in ancient Egyptian mummies; the frequency of the parasitic Guinea worm

d)Being found even in ancient Egyptian mummies and having been the focus of a global public health campaign since 1986, the frequency of the parasitic Guinea worm

e)Having been found even in ancient Egyptian mummies and being the focus of a global public health campaign since 1986, the parasitic Guinea worm species

clock60 wrote:hi shovan85
the answer is A
but one question from here,
how can we justify the usage of -this species of parasite has i was confused with plural noun species and singular verb has, or in this case we must apply to the singular pronoun-this- can you please explain?
that`s why i chose E but feel that it is wrong

clock60 wrote:ok friend i got your point
honestly, the word specie-(singular) does exist but its meaning does not refer to the sentence.
thank you for help