Question

source a: source b: which summary statement best synthesizes information from the two sources? what writer norman cousins discovered on his own, researchers have recently been trying to prove through scientific study: that laughter can relieve pain, reduce depression, promote relaxation, boost the immune system, improve blood flow and breathing, lower blood pressure and glucose levels, and even slow the growth of cancer cells. “studies indicate that participating in laughter therapy is beneficial in terms of disease control,” says william fry, m.d., professor emeritus at the stanford university school of medicine. - “laughter yoga to improve health? it’s no joke,” sallu abrahms laughter can help improve blood flow and breathing when properly applied. laughter has been studied by both writers and scientific researchers. laughter triggers the production of neurochemicals that make you feel calm. laughter can relieve many conditions, such as stress, by stopping the release of stress hormones.

Explanation:

Source A lists multiple benefits of laughter like relieving pain, reducing depression etc. The first option only focuses on blood flow and breathing. The second option is too general about who studied laughter. The third option about neurochemicals is not in Source A. The fourth option about relieving many conditions (like stress which can be related to depression etc.) best synthesizes the info as it covers a broader range of what Source A mentions.

Answer:

Laughter can relieve many conditions, such as stress, by stopping the release of stress hormones.