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B. B. Lal was born in 1921.
i guess on from the options given below:
a. moti lal nehru
b. mahatma gandhi
c. bhikaji cama.
Scientific method.
B a g a b b b a a a b d d b a g a b b b a a b a g b a g a b b b a a a b d d b a g a b b b b a a d a g d b a g a b b b a a a b d d b a g b b b b a a ba b d b a g a b b b a a a b d d d b a g a b b b a a b a g
b b b b b b b b b b b b b b