Which meaning in the dictionary entry is correct for the word dedicate in the context of the following sentence?

Myra has decided to dedicate her life to the welfare of animals.

dedicate (ded-i-kayt) v.

to commit or devote (time, effort, or oneself) to a particular job or purpose
to name (a book or other artistic work) as being published or presented as a tribute to someone
to formally open or unveil (a building or memorial)
to consecrate (a religious place or other building) to a deity or saint

Question

Which meaning in the dictionary entry is correct for the word dedicate in the context of the following sentence?

Myra has decided to dedicate her life to the welfare of animals.

dedicate (ded-i-kayt) v.

to commit or devote (time, effort, or oneself) to a particular job or purpose
to name (a book or other artistic work) as being published or presented as a tribute to someone
to formally open or unveil (a building or memorial)
to consecrate (a religious place or other building) to a deity or saint

foreverjennnicole · Answer

Hi! Welcome to OpenStudy. :) I'm Jenna if you ever need help with anything. 

What do you think the answer is?

anonymous · Answer

Well what is the welfare of animals? and Also what's she doing with her time she is _____ her time.