"the ribs in the surfaces of the machine were broken, the motor injured and the chain guides badly bent, so
that all possibility of further flights with it for that year were at an end."
the above statement creates:
an adventurous mood
a tone of disappointment
reflective mood
a bitter tone
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© ask for
tunin

"Tone of Disappointment" Is the correct answer

Explanation:

We know this is the correct answer because we can infer that they are disappointed because they are ending the year on a bad note and were not happy with the results that came from the test flight.

I also had the same answer in OW and got it correct.

Hope I helped:)

Have a great day!!!