To find proof as to whether he is "in love" or not, Yukimura pats Himuro on the head from point-blank range. Seeing this, Ibarada, an upperclassman in the Ikeda Lab, talks about the need for a control experiment. In other words, in order to prove that the racing of his heart is because of Himuro specifically and not just because he's facing a woman, Yukimura has to pat Kanade and Ibarada on the head too. Himuro, on the other hand, sets out to prove that food made with love tastes better and cooks, but...
This is the objective of the 
experiment you were running.
.هذا هو الهدف من التجربة التي تقومان بها
Dieser Frage widmet sich
das derzeitige Experiment.
Este es el objetivo de su experimento.
Este es el objetivo del experimento.
voilà ce que vous cherchez
à déterminer.
Questo è l'obiettivo dell'esperimento che state conducendo.
O objetivo desse experimento é esse.
Учащение пульса является 
реакцией А на Б?