Which of the following explains how natural selection leads to evolution?

A. Conditions in the environment reduce competition for resources within a species.

B. Helpful variations accumulate among surviving members of the species.

C. Overproduction provides food for stronger members of the species.

D. Environmental changes favor weaker members of the species.

My Answer:
B

Am I correct?

thats the right one!:)

Haha, thanks:D

I would say that the answer is b, although I'm not quite sure..

Yes, your answer is correct. Option B, "Helpful variations accumulate among surviving members of the species," explains how natural selection leads to evolution.

To understand why, we need to understand how natural selection works. Natural selection is a process in which individuals with traits that are beneficial for their environment are more likely to survive and reproduce, passing on those traits to future generations.

Now, let's break down the process explained in option B:

1. Variation: Within a species, there is genetic variation, meaning that individuals within the same species have different traits or characteristics.

2. Survival: In any given environment, certain traits may be more advantageous than others. Individuals with advantageous traits are more likely to survive and reproduce, passing on these traits to their offspring.

3. Accumulation of helpful variations: Over time, as individuals with helpful variations continue to survive and reproduce, their advantageous traits become more prevalent in the population. This is because the offspring of individuals with advantageous traits are more likely to inherit those traits.

4. Evolution: As the advantageous traits become more common in the population, the overall characteristics of the species gradually change. This process is called evolution.

Therefore, option B correctly explains how natural selection leads to evolution, as it highlights how beneficial traits accumulate among surviving members of a species over time, leading to changes in the population as a whole.