Question

species that are not pests.
environment may include the development of \superweeds\ or harm to

1. the effects on the human body of consuming gm food are not fully understood. for example, tomatoes, for example, are no longer being grown because of questions about possible carcinogens.

\to gmo or not to gmo?\ by george erdosh and marcia amidon lusted. © carus publishing company. reproduced with permission.
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¹carcinogens—cancer-causing substances

part a

1. how do the authors develop the central idea?

a by describing the controversy surrounding gmo foods
b by explaining the effects of gmo foods on the farming industry
c by elaborating on the growing consumer demand for gmo foods
d by contrasting gmo foods with plants that are not genetically altered

part b

1. which quotation supports the answer in part a?

a “it is estimated that 60 to 70 percent of all processed foods available on store shelves gmo ingredients...” (paragraph 1)
b “back then, farmers always selected and saved the best of their crops to plant as the year’s seeds.” (paragraph 8)
c “a new kind of tomato was bred to resist rotting and give it a longer shelf life.” (paragraph 11)
d “many people wonder about what unintended consequences gmo foods might have human body.” (paragraph 12)

Explanation:

Part A

To determine how the authors develop the central idea, we analyze each option:

• Option A: The text mentions questions about possible carcinogens in GM tomatoes and other concerns, showing controversy around GMO foods. This aligns with developing the central idea through describing controversy.
• Option B: The passage doesn't focus on GMO effects on the farming industry.
• Option C: There's no emphasis on growing consumer demand for GMO foods.
• Option D: The passage isn't mainly about contrasting GMO and non - GMO plants.

We need a quotation that supports the idea of controversy around GMO foods (from Part A's answer):

• Option A: This is about the prevalence of GMO ingredients, not controversy.
• Option B: This is about traditional farming methods, not GMO controversy.
• Option C: This is about a GMO tomato's features, not controversy.
• Option D: This shows people's concerns about unintended consequences of GMO foods on the human body, which is part of the controversy around GMOs.

Answer:

A. by describing the controversy surrounding GMO foods

Part B