Based on the passage about future health and diet technology, answer this question. What, according to the passage, will personalised DNA chips make possible in the future for ordinary people?

Introduction / Context:
This comprehension question focuses on the future role of personalised DNA chips as described in the passage. The text explains that genomics will enable individuals to use these chips to understand their genetic risks and plan their diet. The question asks what will be possible once such DNA chips become available to ordinary people.

Given Data / Assumptions:

• The passage mentions personalised DNA chips.
• It states that these chips will allow people to assess inherited predispositions for certain diseases.
• It also says that individuals will then be able to adjust their diets accordingly.
• The context emphasises prevention of disease and optimisation of health through nutrition.

Concept / Approach:
To answer this detail oriented question, the learner needs to locate the part of the passage discussing DNA chips and summarise exactly what they will do. The key ideas are assessment of genetic risk and adjustment of diet. Any option that talks only about risk without mentioning diet, or that introduces new ideas such as height tracking, must be discarded. The correct option should essentially paraphrase the sentence from the passage.

Step-by-Step Solution:
Step 1: Find the sentence in the passage that discusses personalised DNA chips. Step 2: Note that the passage states these chips will allow us to assess inherited predispositions for certain diseases. Step 3: Note further that once we know these predispositions, we will be able to adjust our diets accordingly. Step 4: Compare this with option a, which clearly mentions both assessing genetic predispositions and adjusting diet. Step 5: Examine options b, c, d, and e, which either reverse the meaning or mention outcomes that are not described in the passage.

Verification / Alternative check:
Checking against the passage again confirms that the DNA chips are presented as tools for personalised prevention and optimisation. There is no suggestion that they will increase disease risk, prevent people from choosing foods, or be used only by athletes. Option a captures the full two step process: assessment of risk followed by diet adjustment. Because it matches the text in both content and tone, we can confidently select it as the correct answer.

Why Other Options Are Wrong:
Option b states that the chips will place everyone at great risk for heart disease, which contradicts the preventive aim of genomics. Option c claims people will not be able to determine what food to eat, which is the opposite of the passage, where people use genetic information to guide food choices. Option d says people will be forced into the same food and prevented from adjusting diet, again contradicting the text. Option e shifts the focus to height and weight tracking in athletes, which is not mentioned at all in the passage.

Common Pitfalls:
Some students may misread the question and think about current uses of medical tests rather than the specific future described. Others may fall for options that include dramatic language about risk, without noticing that the passage is optimistic, not pessimistic. To avoid such errors, it is important to pay attention to the exact verbs used in the text, such as assess, adjust, and allow.

Final Answer:
According to the passage, personalised DNA chips will allow people to assess their inherited predispositions to certain diseases and adjust their diets accordingly, so option a is correct.