I came across a question that is a little bit difficult.
That's question #3.
I need to put
A become B reach C get D find
"The tiger can live in almost (1).any.. natural environment from hot, steamy jungles to snow- fields with zero temperatures. A female tiger has her first cubs when she is less (2) .than.. four years old. About half usually die before they (3) ... a year old."
My personal take on this would be since, I head the expression "reach a certain age" I would choose answer B. Am I correct? Why?