17 What is the best summary of the article?
A Concrete is a popular material, but it can develop cracks over time. Microbiologist Hendrik
Jonkers believes that adding bacteria to concrete can remedy this problem and
provide savings for the construction industry.
B Hendrik Jonkers, a Dutch microbiologist, noticed that concrete cracks over time. He
decided to add bacteria to concrete to make a substance called bioconcrete. The bacteria
are placed inside plastic capsules that are mixed into wet təncrete.
C A Dutch microbiologist named Hendrik Jonkers became interested in investigating how
bacteria might be applied to concrete to fill cracks in concrete caused by water. He
developed a self-healing bioconcrete that works to make concrete more durable.
D Microbiologist Hendrik Jonkers wondered if concrete could repair itself in the same way
that human bones do. He developed bioconcrete, which was used to build a lifeguard
station near a lake in the Netherlands and repair an irrigation system in Ecuador.
Answer:
The best summary of the article is not fully clear without the context of the article. However, based on the given options, the most comprehensive summary seems to be C. This option mentions Jonkers’ interest in using bacteria for concrete, his development of a self-healing bioconcrete, and the goal of making concrete more durable.