Aleksander on August 27, 2019
I interpreted the stimulus as following:
Birds nesting for the first time are less successful than older birds. Birds nesting for the second time are less successful at breeding than the first time they breed. It is unclear what qualifies as an older bird - but I think we can say third time onward.
Size and Strength is not a reason that affects breeding ability because they are full grown (assuming full grown = size and strength) when they leave the nest.
The conclusion is that through nesting experience leads to a higher probability of breeding.
The question is looking for a weaken argument so:
A) Not sure if this is relevant.
B) Laying viable eggs increases probability of breeding with each trial. This agrees with the conclusion so I am not sure why this is the answer.
C) The probability of mating the second time is greater than the first. This directly disagrees with first part of my interpretation of the answer and disqualifies that you benefit each time from experience as second time you would be more experienced than the first.
D) Smaller and weaker birds breed just as well. The stimulus suggests that this not the answer and thus this Strengthens it.
E) Not really relevant as the stimulus pertains to the first nest onward and not pre first nest.
Can you please explain why the answer is B and where I went wrong in my line of thinking in interpreting the answer/stimulus?
Thanks ahead of time.
Irina on August 27, 2019