This is the charactersketch of alexander
alexander graham bell was a scientist,inventor and a very close friend of helen.
he was a philanthropist and was always eager to help the deaf and blind.he was the one who guided helens parents and told them about perkins institute for the blind.he was a kind hearted person and guided helen during her tough times. even when she couldn't understand language dr alexander made her very comfortable around him.he became her tour guide in the world fair.he gave her a lot of knowledge. helen had very fond memories of him.he is the kind of friend one should have in their life
at age 29, he invented the telephone. his curiosity and character trait of inventiveness led him to many more useful inventions such as the metal detector and the vacuum jacket. his relationships with people he worked with and taught were extraordinary. 
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if helpful plz mark as brainliest