Observe the map,
\The point lies in quadrant I, since x coordinate is positive and y coordinate is positive.
Therefore Lake Kulundinskoye lies in Asia continent.
\The point lies in quadrant II, since x coordinate is negative and y coordinate is positive.
Therefore Lake Champlain lies in North America continent.
\The point lies in quadrant I, since x coordinate is positive and y coordinate is positive.
Therefore Lake Van lies in Asia continent.
The point lies in quadrant III, since x coordinate is negative and y coordinate is negative.
Therefore Lake Viedma lies in South America continent.
\The point lies in quadrant III, since x coordinate is negative and y coordinate is positive.
Therefore Lake Saint Clair lies in North America continent.
\The point lies in quadrant I, since x coordinate is positive and y coordinate is positive.
Therefore Starnberger Lake lies in Europe continent.
(a) Lake Kulundinskoye: lies in Asia continent.
(b) Lake Champlain: lies in North America continent.
(c) Lake Van: lies in Asia continent.
(d) Lake Viedma: lies in South America continent.
(e) Lake Saint Clair: lies in North America continent.
(f) Starnberger Lake: lies in Europe continent.