[Solved] Clara calls potential research participants and asks if they would be willing to give blood. Once they have agreed to donate blood, she informs them that their donation is scheduled at 7:00 in the morning on a Saturday. Though most participants are not happy to hear this information, almost all of them do show up for the blood donation appointment. Clara has taken advantage of A) lowballing. B) the foot-in-the-door technique. C) the door-in-the-face technique. D) psychological reactance. Naked Eye: Refers to the observation of objects without the use of magnification instruments. Lens Paper: A soft, lint-free paper used for cleaning the lenses of optical instruments without scratching them. Lens Cleaner: A solution or substance specifically designed for cleaning the optical surfaces of lenses to remove dirt, dust, and fingerprints. Disinfectant: A chemical agent used to destroy or inhibit the growth of harmful organisms on surfaces or objects.