Answer the following question: Fact 1: Smoking tobacco decreases stamina. Fact 2: Energy levels go up with high stamina and decreased recovery time from fatigue. Given the two facts above, smoking tobacco can cause what to increase?

Options: 1). major threat to health. 2). cause people to become sick.. 3). enormous damage to homes. 4). Abnormal cell growth. 5). Greenhouse gases. 6). recovery time from fatigue. 7). massive damage. 8). smell and taste.
Answer:
6).