During Requirements only verification is done.i.e verifying 
the SRS..code review..wak-thrus..etc..testing is validation 
activity.so none is the ans for this. jus chek out..

Blank box testing , becoz during requirement phase we will 
do only requirement verificarion.

with the requirements only the tester have the rights to 
prepare the SRS doc. black box testing is purely done by the
tester. with the help of the requirements we can do the 
white box testing. bcoz white box handles the syntax and 
logic.. so it wil be white box testing.

both testing will be done...
simple that with the requirements we are goin to proceed 
the project.. so ans is both testing should be done.

During requirements we can perform static black box 
testing.We can only examine and review requirements.we use 
requirements as a test basis and developer refer 
requirements for development.

"none" is the ans for this ques.
B'coz during requirement phase, verification is done. with
requirements we can check feasibility of requirements. White
box testing can be done if we are provided with code. in
requirement phase we have not coding. and for black box
testing something should be in our hand and in requirement
phase we don't have anything. So, only verification can be
done in requirement phase.