The word ‘yield’, as used in the passage, means

Directions: Read the following passage and answer the question that follows.

Narrow-leaved-tea-tree is supposed to yield a lot of benefits in the form of essential oil. The leaves and twigs of tea tree are distilled in steam or water to extract this beneficial oil.
There are many compounds present in tea tree out of which the main compound which has been found to yield maximum benefit is tea tree oil which has been found to have antiseptic and anti-fungal activities.
Australian aboriginals have been known to use the tea tree leaves to treat wounds and skin infections. Modern research has shown the oil to benefit in healing warts, wounds, burns, boils, in the treatment of dandruff, abscess, herpes etc. Tea tree oil has shown great results in the removal of acne, scars and other spots of the skin. It is an excellent product to treat skin infections and rashes.
Respiratory ailments such as bronchitis, asthma, sinusitis, cold and whooping cough have been found to have reduced after the usage of tea tree oil. It has also been known to boost immunity in the body and prevent fever, cold and cough. Also because of its anti-viral properties, tea tree oil helps combat infectious diseases like chicken pox, measles, flu etc.