Which best describes the texture heard in the opening of josquin's ave maria?

Imitative polyphony  
imitative polyphony permits the individuals from a polyphonic surface to share discernable highlights of the melodic material, as they resound bits of it among the different parts.   
Polyphony is generally isolated into two principle composes: imitative and non-imitative. Either the different melodic lines in a polyphonic entry may sound like each other, or they might be totally autonomous in their cadence and form. In the event that the individual lines are comparative in their shapes and sounds, the polyphony is named imitative; however in the event that the strands demonstrate practically no likeness to each other, it is non-imitative. Every one of these sorts may likewise blend with or succeed one other in a melodic entry