by infectious blood, sexual contact, and needles, and from mother to newborn
by contaminated food and water
by contaminated water only
Number 2 is correct.
Hepatitis B is transmitted via infectious blood, dirty needles, and sexual contact, and from mother to newborn. Hepatitis C is most commonly spread by infectious blood and needles. Contaminated food and water can transmit hepatitis A, while hepatitis E is transmitted only by contaminated water.