In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given. Select the most appropriate option for each blank.
Comprehension:

Louis Braille was a French educator and inventor (1)____ a system of reading and writing for the visually impaired. His system (2)_____ virtually unchanged to date and is known worldwide simply as 'braille'. Blinded (3)_____ both eyes as a result of an early childhood (4)______, Braille mastered his disability while still a boy. He (5)______ at school and received a scholarship to the Royal Institute for Blind Youth.