Gigafactory is owned and operated by

(A) Apple
(B) Facebook
(C) Tesla
(D) Microsoft

The answer is: (C) Tesla
Tesla Inc has multiple factories with names gigafactory 1, 2, 3 and others in Nevada, New York, Shanghai, Berlin and in other cities.

The total height of Mount Everest is

(A) 7,848 meter
(B) 8,848 meter
(C) 9,848 meter
(D) 10,848 meter

The answer is: (B) 8,848 meter
The total height of Mount Everest, the world’s highest mountain, is 8,848 meter.