People usually do not need deodorant or antiperspirant when?

The correct answer reflects the fact that before puberty, individuals do not typically produce the sweat and body odor associated with the apocrine glands, which are stimulated by hormonal changes during this developmental stage. Prior to puberty, the body primarily produces eccrine sweat, which is mostly water and salt and does not carry the same odor as the sweat produced after puberty. As a result, young children generally do not experience the need for deodorant or antiperspirant, as their bodies are not fully developed in terms of sweat and odor production. This physiological change is significant and influences personal hygiene choices as one matures.

In other contexts, such as when sweating a lot, hanging out with family, or preparing for a job interview, individuals may still feel the need for deodorant or antiperspirant based on social norms or personal comfort.