An article about half-lives describes a daughter isotope. what is a daughter isotope?
a. the isotope that forms from the radioactive decay of a less stable isotope
b. the isotope that forms from the radioactive decay of a more stable isotope
c. an isotope that undergoes radioactive decay to form a less stable isotope
d. an isotope that undergoes radioactive decay to form a more stable isotope

The correct option is A.

Explanation:

A radioactive decay is defined as the decay process, in which a less stable nuclei decomposes to form a stable nuclei. The isotope which is less stable is the parent isotope and the more stable isotope is the daughter nuclei.

Hence, the correct option is A, the isotope that is formed from the radioactive decay of a less stable isotope.

it is the most commonly accepted one