Synonym of TESTIFY

Witness
Describe
Recognise
Appreciate

The correct answer is A. Witness.

A witness is someone who sees something happen and can provide evidence about it. In a legal context, a witness is someone who testifies in court about what they saw or heard.

The other options are not synonyms of testify.

B. Describe means to give an account of something in words.
C. Recognize means to identify someone or something as being familiar.
D. Appreciate means to value or admire something.