In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Mother Teresa was a humanitarian because she (1)______ her entire life to the service of the sick and the (2)______. She joined the sisters of Loreto at the age of 18 to (3)______ a missionary in India. She started her missionary work in Darjeeling and (4)______ the local language, Bengali. She soon took her vows (5)______ a nun and also took the name, Teresa.