Question: The Keweenaw Bay is an arm of Lake Superior adjacent to which major peninsula in Michigan?

Context paragraphs:
L'Anse Indian Reservation: The L'Anse Indian Reservation is the land base of the federally recognized Keweenaw Bay Indian Community of the historic Lake Superior Band of Chippewa Indians.  (The Keweenaw Bay Indian Community was defined in 1934 by the Indian Reorganization Act as the successor apparent of the L’Anse and Ontonagon bands).  The reservation is located primarily in two non-contiguous sections on either side of the Keweenaw Bay in Baraga County in the Upper Peninsula of the U.S. state of Michigan.

Copper Island: Copper Island is a local name given to the northern part of the Keweenaw Peninsula (projecting northeastward into Lake Superior at the western end of the Upper Peninsula of Michigan, United States of America), separated from the rest of the Keweenaw Peninsula by Portage Lake and the Keweenaw Waterway.

Brockway Mountain Drive: Brockway Mountain Drive is an 8.883 mi scenic roadway just west of Copper Harbor in the Upper Peninsula of Michigan in the United States.  Drivers can access the road from state highway M-26 on either end near Eagle Harbor to the west or Copper Harbor to the east in the Keweenaw Peninsula.  The drive runs along the ridge of Brockway Mountain on the Keweenaw Fault and climbs to 1320 ft above sea level, 720 ft above the surface of Lake Superior.  Several viewpoints along the route allow for panoramas of Copper Harbor, Lake Superior, and undeveloped woodland.  On a clear day, Isle Royale is visible approximately 50 mi in distance from the top of the mountain.

Upper Peninsula of Michigan: The Upper Peninsula is the northern of the two major peninsulas that make up the U.S. state of Michigan.  It may also be referred to as the UP or Upper Michigan.  The peninsula is bounded on the north by Lake Superior, on the east by the St. Marys River, on the southeast by Lake Michigan and Lake Huron, and on the southwest by Wisconsin.

M-38 (Michigan highway): M-38 is an east–west state trunkline highway in the Upper Peninsula (UP) of the U.S. state of Michigan.  Its west end starts in Ontonagon and runs east to Baraga, some 42.225 mi apart.  The highway crosses streams and rivers in forest lands and provides access to a casino.  The east end is located by the Keweenaw Bay of Lake Superior in the Keweenaw Bay Indian Community.

Traverse River: The Traverse River is an 11.9 mi river in Keweenaw and Houghton counties on the Upper Peninsula of Michigan in the United States.  It flows into Lake Superior just north of Keweenaw Bay.

Keweenaw Waterway: The Keweenaw Waterway is a partly natural, partly artificial waterway which cuts across the Keweenaw Peninsula of Michigan; it separates Copper Island from the mainland.  Parts of the waterway are variously known as the Keweenaw Waterway, Portage Canal, Portage Lake Canal, Portage River, Lily Pond, Torch Lake, and Portage Lake.  The waterway connects to Lake Superior at its north and south entries (upper and lower portage entry lighthouses), with sections known as Portage Lake and Torch Lake in between.  The primary tributary to Portage Lake is the Sturgeon River.

Lake Minong: Lake Minong was a proglacial lake that formed in the Lake Superior basin during the Wisconsin glaciation around 10,000 B.P. (Before Present).  This was the last glacial advance that entered Michigan and covered only part of the upper peninsula.  Lake Minong occurred in the eastern corner of the Lake Superior basin while Lake Duluth was in the western end.  The lakes became separated when the glacier reached the upper peninsula.  Lake Minong expanded to the north as the ice retreated after 9,800 B.P.  When the ice retreated from the Keweenaw Peninsula, Lake Duluth merged into Lake Minong.

Keweenaw Bay: Keweenaw Bay is an arm of Lake Superior in North America.  It is located adjacent to the Upper Peninsula of the U.S. state of Michigan, to the southeast of the Keweenaw Peninsula.  It is also the name of a small community near the bay.

Baraga State Park: Baraga State Park is a 56 acre state park in Baraga County, Michigan.  The park sits on the Keweenaw Bay of Lake Superior along US-41 on the south side of the village of Baraga, Michigan.  The park, village and county bear the name of Bishop Frederic Baraga.  The Bishop Baraga Shrine is nearby.  The park has modern restrooms from mid-May to the end of October.

Supporting paragraphs: Keweenaw Bay Upper Peninsula of Michigan
Answer: Upper Peninsula