Question

please help will give medal and fan!

Answer 1

?

Answer 2

@P0sitr0n

Answer 3

BC

Answer 4

it is the only one, since you gotta satisfy two conditions:
a segment that passes through the center of the circle AND
both of its ends are connected to the circle

Answer 5

well a diameter stretches across the full circle

Answer 6

only choice is c

Answer 7

all the rest are radius or even smaller

Answer 8

it is C because BC starts from one side to the other

Answer 9

thanks guys!

Answer 10

understand?