Practicegmat wrote:
still I have conusion with (d) and (e)
Could anyone explain why (d) is wrong
Regards
Hi Practicegmat.
I think your question is wrong causeD is correct . Probably, your question is "why E is wrong?" if that's true, so this is my explanation.
Conclusion is: if bacteria did arrive on Earth from Mars, they must have died out because no two bacterial strains on Earth are different enough to have arisen on different planets.
What should we attack? We weaken the conclusion by showing
...