1) d) All of the above.
2) b) Lac des Seize îles, between Morin Heights and Arundel.
3) c) The municipality is situated at the northeast extremity of the old Milles-Isles Seigneurie, which took its name from the Milles-Isles or (Milles-îles) River, which was famous for its many islands, and which separates the Laval Island from the north shore.
4) a) The lake was christened by Saint-Jérôme magistrate Benjamin-Antoine Testard de Montigny in honour of his seven sons.
5) None of the above. Chute des Quatre Pattes is in the Gatineau Valley; Lac des Quinze is in the Abitibi-Témiscamingue Region; and Trois-Lacs is near Asbestos in the Eastern Townships.References:Commission de toponymie du Québec, Noms et Lieux du Québec: dictionnaire illustré, 1996.