McQuilkin and Copan grant that it may be impossible to prove that a zygote or an embryo is a complete human life, but they also argue that: ethc 101It is impossible to prove that it is not.

The correct answer is it is impossible to prove that it is not

But they also argue that: it is impossible to prove that it is not.

Explanation: McQuilkin and Copan are authors of the book An Introduction to Biblical Ethics: Walking in the way of Wisdom. The book offers an aerial view of biblical ethics. The book hope to represent biblical ethics in contrast to the world of alternatives in ethics. The books covers a large range of different subjects some of which are idolatry, homosexuality, criminal justice, murder, racism, abortion, labor etc.

In chapter 22 of the book, it discusses abortion and infanticide, promoting the value of all human life at conception. Here, the book explains that it may be impossible to prove that a zygote or an embryo is a complete human life but they also argue that It is impossible to prove that it is not.

answer; unimodal and symmetrical;