Question

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

Explanation:

To solve this, we analyze each option:

• Option A: The text mentions concerns about GM food effects on humans (e.g., possible carcinogens) and environmental impacts (superweeds), showing controversy.
• Option B: The text doesn't focus on farming industry effects.
• Option C: There's no mention of consumer demand for GMO foods.
• Option D: The text doesn't contrast GMO and non - GMO plants.

So the correct option is A as the authors develop the central idea by presenting the controversies around GMO foods (environmental and health - related concerns).

Answer:

A. by describing the controversy surrounding GMO foods