while researching a topic, a student has take...

while researching a topic, a student has taken the following notes: some spiders create webs that store mechanical energy. a force stretching a spring causes the spring to store mechanical energy that becomes motion when the force is released and the spring bounces back. black widow spiders weave massive webs called cobwebs, and connect the bottoms of the webs to the ground using gumfoot silk. the gumfoot silk is stretched tightly between the cobweb and the ground. when prey touches gumfoot silk and breaks the attachment to the ground, the silk flies up into the web, trapping the prey. the student wants to emphasize a similarity between spider webs and springs. which choice most effectively uses relevant information from the notes to accomplish this goal? a black widow spiders are a type of spider that build webs capable of storing mechanical energy. b cobwebs, the massive webs of black widow spiders, are connected to the ground with gumfoot silk. c springs store energy when a force is applied to stretch the spring; when the force is released, the spring bounces back and converts the stored energy into motion. d black widow spiders use gumfoot silk to keep tension on their webs, so the silk can act as a spring, propelling the prey into the web when contact with the ground is broken.

Answer

# Brief Explanations: The goal is to emphasize the similarity between spider - webs and springs. Option D mentions that the gumfoot silk of black widow spiders can act as a spring, which directly shows the similarity by comparing the silk in the web to a spring in terms of function. Option A just states that black widow spiders' webs can store mechanical energy without making a connection to springs. Option B only describes the connection of cobwebs to the ground with gumfoot silk. Option C only describes springs and not the similarity to spider - webs. # Answer: D. Black widow spiders use gumfoot silk to keep tension on their webs, so the silk can act as a spring, propelling the prey into the web when contact with the ground is broken.