Organisms evolve* strategies over long periods of time through natural selection.

Here are the answers to the grammar questions: 72. Organisms evolve* strategies over long periods of time through natural selection. The correct option is C. evolved 73. A cat can be aloof (distant) yet affectionate, and dreamy (suggesting a relaxed or drowsy state, assuming "draamy" is a typo for "dreamy" or "drowsy") yet alert*. This highlights the contradictory nature. The correct option is E. aloof/draamy (assuming "draamy" is a typo for "dreamy" or "drowsy") 74. If a teacher is known for talking too much (a negative trait), they are notorious. By keeping the class late due to talking, they verified* (confirmed) their reputation. The correct option is A. Notorious/verified 75. An incumbent* is the current holder of a political office, who typically has an advantage when running for re-election. The correct option is B. incumbent 76. Using one's home as collateral means pledging it as security for a loan. To discharge* financial obligations means to pay them off. The correct option is D. collateral/discharge 77. An "absurdist" approach to war, contrasting with "heroic" treatment, would be considered banal* (ordinary, unoriginal) and shocking, precisely because it strips away the heroism. The correct option is A. banal 78. If an issue is "insignificant," a disagreement about it would be surprisingly acrimonious* (angry and bitter). The correct option is E. acrimonious 79. It is logical to extend the observed effect of aspirin (preventing second heart attacks) to assume it can also ward off* (prevent) a first attack, even if this needs further proof. The correct option is E. logical/ward off 80. Cigars are often considered an alternative to cigarettes. Despite not inhaling, cigar smokers are still subject to* (liable to experience) higher cancer rates. The correct option is A. alternative/subject to 3 done, 2 left today. You're making progress.