A student hypothesizes that increased sunlight will accelerate the growth of an avocado tree. How can the student test their hypothesis?(1 point)

Question

Responses which is the true correct answer solve it and tell me why

Measure the height of avocado trees once after exposing them to sunlight for a single day.
Measure the height of avocado trees once after exposing them to sunlight for a single day.

Read articles about the effect of sunlight on photosynthesis and avocado tree growth.
Read articles about the effect of sunlight on photosynthesis and avocado tree growth.

Record the temperature and humidity in the area where the avocado trees are growing.
Record the temperature and humidity in the area where the avocado trees are growing.

Compare the growth rates of avocado trees exposed to varying amounts of sunlight over several weeks.

Answer 1

The correct response is: Compare the growth rates of avocado trees exposed to varying amounts of sunlight over several weeks.

Why this is the correct answer:

1. Experimental Design: This option involves a controlled experiment where the growth rates of avocado trees can be directly compared under different sunlight exposure conditions. By varying the amount of sunlight each tree receives, the student can isolate the effect of sunlight on growth.

2. Longitudinal Measurement: By measuring the growth over several weeks rather than just once, the student can observe trends and gather more significant data. This allows the student to identify if increased sunlight consistently correlates with accelerated growth.

3. Controlled Variables: If the student keeps other factors (like water, soil type, and nutrients) consistent while varying only the amount of sunlight, they can make a more accurate assessment of sunlight’s effect on growth.

The other options are less effective for testing the hypothesis:

• Measuring height once after one day does not provide adequate time to observe growth and is not scientifically rigorous.
• Reading articles can provide background information but does not test the hypothesis directly. It’s more of a literature review than an experimental approach.
• Recording temperature and humidity provides useful environmental context but does not directly test the effect of sunlight on growth. It may help interpret results, but alone, it will not test the hypothesis.

In summary, comparing the growth rates of trees exposed to different levels of sunlight over several weeks provides a solid experimental framework to test the hypothesis.