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Read the following passage and mark the letter A, B, C, or D to indicate the answer to each of the question.
Genetically modified crops are plants that have been changed in some way using advanced biological techniques. These crops are altered by adding genes from other organisms into their DNA, making them easier to grow and healthier to eat. This might include splicing genes from bacteria, animals, or other plants with those of a particular crop to enhance desired traits and eradicate negative qualities.
The primary focus of GM technology over the last decade has been on staple food crops such as maize, rice, soybeans, canola (rapeseed), and also cotton seed oil. Examples of genetic intervention include making crops more tolerant to herbicides or more resistant to insecticides. There are also studies underway to create food crops that could potentially be more resistant to drought, frost, and soils with a higher salt content. Scientists also aspire to create a banana containing a vaccine for the infectious disease Hepatitis B, and biologists in Switzerland and Germany have already created a rice variety fortified with Vitamin A called ‘Golden Rice’.
GM crops have been the subject of much controversy since they were first introduced to consumers in the 1990s. Many people are worried about the potential dangers of GM crops. Although most people have already been exposed to some kinds of GM products through processed foods, and scientists maintain they have not found evidence that they are harmful to humans, their long-term health effects remain unknown.
Which of the following can be the best title for the passage?
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