Anna was having trouble sleeping, often waking up in the middle of the night and being unable to go back to sleep. She had been under a lot of stress at work, and figured that stress must be the cause. She consulted a self-help book that said that drinking herbal tea was an effective method of stress relief. She began drinking one cup of herbal tea every night at 7pm. She noticed after a few days that she stopped waking up in the middle of the night. Which method of knowing has Anna NOT employed in her quest to fix her sleep problem (based on the information given)

Voters commonly condemn politicians for being insincere, but politicians often must disguise their true feelings when they make public statements. if they expressed their honest views—about, say, their party's policies—then achieving politically necessary compromises would be much more difficult. clearly, the very insincerity that people decry shows that our government is functioning well. which of the following, if true, most seriously undermines this reasoning? (a) achieving political compromises is not all that is necessary for the proper functioning of a government. (b) some political compromises are not in the best long-term interest of the government. (c) voters often judge politicians by criteria other than the sincerity with which they express their views. (d) a political party's policies could turn out to be detrimental to the functioning of a government. (e) some of the public statements made by politicians about their party's policies could in fact be sincere.