Anything that relates to sexual reproduction (gametes coming together to fertilize) should be crossed off.
Not much context was provided but you can look back to some other questions I've answered, I have a full in-depth answer to the same question another person had.
<span>Malnutrition. Malnutrition refers to deficiencies, excesses or imbalances in a person's intake of nutrients. The baby is not getting a balanced diet to meet its bodily needs, and that's why the baby is at high risk of the mentioned above. If a child is undernourished, especially below 2 years of age, it may result in permanent problems with physical and mental development, and since early childhood is an important period for cognitive, behavioral, and physical development, a nutritious diet is the most important factors for ensuring a child reaches optimal development.</span>
The question that could be investigated through scientific research is B. Does a newly synthesized chemical reduce bacteria? The answer is B. Because the other questions aren’t science questions. They are bias.
