warrant and pride
I am confused of the word 'warrant' and 'pride' which is appropriate in the sentence.

"We____ ourselves not only on the quality of our research , but also on its contribution to improving our world".

The answer is pride and I don't know why couldn't use 'warrant'.
Could anybody help me this question?Thank you very much.

Question

warrant and pride
I am confused of the word  'warrant' and 'pride' which is appropriate in the sentence.

"We____ ourselves not only on the quality of our research , but also on its contribution to improving our world".

The answer is pride and I don't know why couldn't use 'warrant'.
Could anybody help me this question?Thank you very much.

Answer

The context is not correct for "warrant".

"We pride ourselves" - we are proud of what we do.  We are pleased with what we do.

"warrant" means justify.  "This crime warrants a serious punishment."  "This event will warrant more investigation."  If you used "pride" instead of warrant, these sentences would not make sense.