Life‑cycle analysis .
a. examines the life cycle of products for ecological efficiency.
b. defines how different organisms interact within ecosystems.
c. is an environmental movement designed to reduce municipal traffic and encourage alternative forms of transport.
d. is the study of statistical changes in the human population.
e. examines the cycling of carbon in the environment.

Explanation:

Life cycle analysis is a method used to evaluate the environmental factor of a product through its life cycle causing extraction and processing of the raw materials, manufacturing, distribution, use, recycling and finally it goes to  disposal.

Life‑cycle analysis is that, examines the life cycle of products for ecological efficiency.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.