What Event Occurs at the End of the Pre-Main-Sequence Stage

question 244

Multiple Choice

What event occurs at the end of the pre-main-sequence stage of a star's life?

• A) The star explodes, forming a supernova remnant.
• B) Gas is spun off from the star's equator, from which planets may form.
• C) Nuclear reactions begin in the star's core, converting hydrogen into helium.
• D) The star begins a long period of contraction in which gravitational energy is converted into heat.

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Definitions:

Statement Of Cash Flows

A financial report that shows how changes in balance sheet accounts and income affect cash and cash equivalents, breaking the analysis down to operating, investing, and financing activities.

Financial Ratios

Financial ratios are quantifiable measures used to evaluate a company's financial performance by comparing two line items from financial statements.

Industry

A category of businesses that produce or sell similar products, services, or are involved in the same level of economic activity.

Operating Activities

Business actions directly involved in the production and delivery of goods and services, as reflected in the cash flow statement.