It appears to be an interactive exercise where you need to match geographical names to their descriptions or categories.
The names provided are:
The prompt instructs you to drag these elements to empty fields above.
The clue provided is "Largest lake on the planet." This suggests that one of the listed names refers to the largest lake on Earth, and you should place that name into the appropriate field.
Answer: The task is to identify which of the listed geographical names (Каспийское, Баскунчак, Таймыр) corresponds to the "Largest lake on the planet" and drag it to the correct field.