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