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Darwin believed that emotional expressions began as ________ that came to have evolutionary value ...

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Darwin believed that emotional expressions began as ________ that came to have evolutionary value ...

Darwin believed that emotional expressions began as ________ that came to have evolutionary value because they ________.
   a.   physiological reactions; convey emotional states to other members of the species
   b.   physiological reactions; increased the efficiency of bodily reactions
   c.   communication devices; increased the efficiency of bodily reactions
   d.   random mutations; convey expectations to other members of the species

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7 years ago

Smart ... Thanks!

spaghetti

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Yesterday

Thanks for your help!!

husne

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2 hours ago

Good timing, thanks!

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