<u>Answer:</u> The daughter nuclide formed by the beta decay of given isotope is 
<u>Explanation:</u>
Beta decay is defined as the process in which beta particle is emitted. In this process, a neutron gets converted to a proton and an electron.
The released beta particle is also known as electron.

We are given:
Parent isotope = 
The chemical equation for the beta decay process of
follows:

Hence, the daughter nuclide formed by the beta decay of given isotope is 
A or C are the best options
The answer is the third one .
It is definitely not A. B is an effect. I would say C because D is more of a conservative answer , C is more of a liberal answer, and we currently live in a liberally swayed world. They are probably looking for C. It is not in your nature to be bad.
A. all magnets have two poles