Final answer:
The true statement for toddlers is that the incidence of poisoning is very common due to their exploratory behavior. Toddlers have a smaller vocabulary and a greater weight gain than other options suggest and engage in parallel play.
Step-by-step explanation:
Regarding the statements about toddlers, the nurse would state that the most accurate option is that the incidence of poisoning is very common in toddlers. Toddlers are known for exploring their environment, which can sometimes lead to accidental ingestions and poisonings if harmful substances are within reach. An 18-month-old typically uses between 50 and 200 words, not up to 300 words. When it comes to weight gain, toddlers experience about a 52 percent increase in weight from age one to age three, which would exceed a mere 2 to 3 pounds each year. Lastly, while toddlers do engage in parallel play where they play alongside each other but not interactively, this is preferred over solitary play at this stage of development.