Question

1. part a: which of the following best summarizes this article?

a. a group of scientists recently generated embryonic stem cells through cloning, which may help cure many diseases, though the process raises serious ethical concerns.
b. stem cell research has long been hindered by controversy and repeated attempts to publish falsified data and experiments.
c. the most powerful criticism of stem cell research revolves around the fact that it necessarily and universally involves destroying human embryos.
d. several scientists have already begun attempting to generate living human clones, and the generation of embryonic stem cells provides a vital stepping - stone to their efforts.

Explanation:

We need to analyze each option to determine which best summarizes an article (not shown). Option A mentions generating embryonic stem - cells through cloning, potential for curing diseases, and ethical concerns. Option B focuses on controversy and falsified data in stem - cell research. Option C emphasizes the destruction of human embryos as the main criticism. Option D talks about generating living human clones and embryonic stem - cells as a step. Without the article, we assume a comprehensive summary would include the scientific process, potential benefits, and ethical issues as in Option A.

Answer:

A. A group of scientists recently generated embryonic stem cells through cloning, which may help cure many diseases, though the process raises serious ethical concerns.