Please select "the weight of a television" for this

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Bring the fraction a/a-4 to a denominator of 16-a^2

Pls brainliest will be awarded if answer is correct