Question

Can someone please help me out

Answer 1

It’s D.
Since it measures 39 degrees and the other side looks about the same amount, and 39 times 2 is 78.

Answer 2

`BD \: is \: the \: bisector \: of \: \widehat{ABC} \Rightarrow \widehat{ABD}=\widehat{CBD} \\\Rightarrow \widehat{ABC} = \widehat{ABD} + \widehat{CBD} = 2\widehat{ABD} = 2 * 39 = 78° \\ \Rightarrow D. \: 78°`