Difference between aloud and loudly

[Guest]

Test No. incompl/inter-83 "Save Our Animals (3)", question 10

As it drew near she found she was asking herself ......... whether she had done the right thing. She looked at the horse and it was actually nodding its head and she could have sworn it said okie dokie (all right).

(a) allowed
(b) loudly
(c) loud
(d) aloud

Test No. incompl/inter-83 "Save Our Animals (3)", answer 10

As it drew near she found she was asking herself aloud whether she had done the right thing. She looked at the horse and it was actually nodding its head and she could have sworn it said okie dokie (all right).

Correct answer: (d) aloud

Your answer was: incorrect
As it drew near she found she was asking herself loudly whether she had done the right thing. She looked at the horse and it was actually nodding its head and she could have sworn it said okie dokie (all right).
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Could you explain to me please why "loudly" does not suit? Or is "aloud" as well an adverb?

[Torsten]

Both aloud and loudly are adverbs. Loudly means with great noise, in a very audible tone. Aloud simply means in a natural speaking voice. So, if you read a text you can read aloud, that means you can hear yourself. If you read a text loudly you use force and speak in a very loud voice.
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