Which of the Following Is Not One of the Three

question 15

Multiple Choice

Which of the following is not one of the three main strategies used to measure the mass of a galaxy clusters?

• A)observing how the cluster bends light from galaxies located behind it
• B)studying X- ray emission from hot gas inside the cluster
• C)measuring the temperatures of stars in the halos of the galaxies
• D)measuring the speeds of galaxies orbiting the cluster's center

---

Definitions:

Groove Music

A digital music streaming service by Microsoft that allows users to listen to a library of music tracks, previously known as Xbox Music.

Windows 10 app

An application specifically designed to run on the Windows 10 operating system, available through the Microsoft Store.

Audio Files

Digital files that store sound recordings, which can be played back on electronic devices.

Collections

In programming, an object that groups multiple elements, such as arrays, lists, or dictionaries, to manage sets of data as a single unit.