Complete Question
The complete question is shown on the first uploaded image
Answer:
a

b

c
Step-by-step explanation:
The total number of deaths is mathematically represented as


The total number of deaths in 1996 - 2000 is mathematically represented as


The total number of deaths in 2001 - 2005 is mathematically represented as


The total number of deaths in 2006 - 2010 is mathematically represented as


Generally the the probability that it would occur under the tree given that the death was after 2000 is mathematically represented as

Here
represents the probability that it was after 2000 and it was under the tree and this is mathematically represented as

Here Z is the total number of death under the tree after 2000 and it is mathematically represented as

=> 
=> 
=>
Also
is the probability of the death occurring after 2000 and this is mathematically represented as

=> 
=>
So

=> 
Generally the probability that the death was from camping or being outside and was before 2001 is mathematically represented as

Here
is the total number of death outside / camping before 2001 and the value is 117
So

=> 
Generally the probability that the death was from camping or being outside given that it was before 2001 is mathematically represented as

Here
is the probability that it was before 2001 , this is mathematically represented as

=> 
So

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