Direction: Read the passage given below and answer the questions that follow.

Much before medical science discovered it, Reader’s Digest came out with the prescription – Laughter is the Best Medicine. Newspapers and magazines which regularly run humour columns are, therefore, doing their bit to keep the readers in good health. It is said that if you laugh for ten minutes, you will be in a better position to put up with pain for two hours. According to US researchers, laughter is a good antidote to stress that tones up the system. Facial laugh muscles instruct the brain to ‘feel good’ regardless of how you feel. According to a French doctor, laughter deepens breathing, improves blood circulation, speeds up the process of tissue healing and stabilises many body functions. In short, it acts as a powerful drug with no side effects. Researchers state that laughter stimulates the production of beta-endorphins, natural painkillers in the body, and improves digestion. Those who laugh are less prone to digestive disorders and ulcers. Some people in France have made it a career. You can hire a ‘jovialist’ who cracks jokes and laughs and promises to make you dissolve your worries in helpless laughter. 
Although laughing is a good exercise for toning up the facial muscles, laughing at others’ expense, particularly at their disabilities, is in bad taste and is to be avoided. Secondly, laughing with food in the mouth is dangerous as the foodstuff can get into the windpipe and may choke the respiratory system. Laughter comes best when it is free of encumbrances, whether it is constricting food or the need to humour the boss.