All of the factors described below could account for the difference in the sizes of the tomatoes. Which describes a way in which biotechnology could have caused this difference? A. The plant on the left received more water.
B. The plant on the left was exposed to more hours of sunlight each day.
C. The plant on the left grew in an area with fewer pests.
D. The plant on the left is the result of selective breeding of plants with large fruit.

D my guy

Explanation:

I have a hunch if its biotechnology involved with plants selective breeding seems most appropriate

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol