Multiple choice

The main active constituent of tea and coffee is

  1. Resperine

  2. Caffeine

  3. Asphin

  4. Morphine

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The main active constituent of tea and coffee is caffeine (Option B), which is a central nervous system stimulant. Reserpine is a blood pressure medication, 'asphin' appears to be a misspelling or nonexistent term, and morphine is an opioid painkiller.