Which organism's ancestors diverged first?

The organism labelled 2 diverged first.

The correct answer is option b.

Explanation:

The arrows in the diagram indicates the timeline. The branching point shows the event of divergence in a species.

From the diagram the divergence or internal node is shown at point C.

At point C, 2 and 3 are the new species. C is the recent ancestor of the species 2 and 3.

The ancestors of organism 2 diverged first because the timeline is also short in case of species 2.

the C internode or recent ancestor diverged in to 2 different species 2 and 3.

cancer   is   essentially   uncontrolled   mitosis   of specialized cells

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explanation:

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