Why the other options are wrong:

• She wants to reduce installation time.: Reducing installation time is not her concern.
• She plans to sell the condo soon.: She does not mention selling the condo.
• She wants the floor to match her wall tiles.: Matching wall tiles is not her main floor concern.

Correct Answer: It absorbs less water.

Why this is correct: The employee explicitly says porcelain absorbs less water and lasts longer when comparing it with ceramic for the bathroom. Lower water absorption is the stated advantage selected here.

Why the other options are wrong:

• It is easier to install on uneven floors.: The provider says large tiles need a very level subfloor, not that porcelain is easier to install on uneven surfaces.
• It is available in more colours.: More colour options are not mentioned as an advantage of porcelain.
• It requires less grout.: The provider does not say porcelain requires less grout.

Correct Answer: An underlayment membrane costing about two dollars per square foot.

Why this is correct: After the customer mentions heated floors, the employee proposes installing porcelain over a membrane such as Schluter Ditra. The membrane adds about two dollars per square foot and helps prevent movement and cracking.

Why the other options are wrong:

• Extra labour adding four hundred dollars.: The extra four hundred dollars is the quoted cost for epoxy grout, not extra labour associated with the heated-floor discussion.
• Faster delivery from the warehouse.: Delivery is discussed in terms of stock at the warehouse; faster delivery is not an additional cost linked to heated floors.
• A higher slip-rated tile at seven dollars per square foot.: The employee previously mentions porcelain prices of six or seven dollars per square foot. The additional cost following the heated-floor discussion is the membrane at about two dollars per square foot.

Correct Answer: They require a very level subfloor to avoid uneven edges.

Why this is correct: The employee says large-format tiles require a very level subfloor in a small bathroom. Otherwise, lippage can cause uneven edges where tiles meet.

Why the other options are wrong:

• They have no grout lines to provide grip.: The employee says smaller tiles provide more grout lines for grip. This compares the amount of grout, without saying large-format tiles have no grout lines.
• They limit the choice of grout colours.: The stated large-tile problem is needing a very level subfloor to avoid lippage, without a stated limit on grout colours.
• They are more expensive to replace if damaged.: Replacement cost is not discussed as a concern with large tiles.

Correct Answer: It resists stains and mould better.

Why this is correct: When asked about cleaning grout lines, the employee says epoxy grout helps because it resists stains and mould, although it costs more upfront. This supports its cleaning and maintenance advantage.

Why the other options are wrong:

• It is only suitable for wall tiles.: The provider does not limit epoxy grout to wall tiles only.
• It is included at no extra cost.: Epoxy grout costs an extra $400, so it is not included for free.
• It shortens the installation time.: The provider does not say it shortens installation time.

Correct Answer: Mid-range matte porcelain in a standard size.

Why this is correct: The employee recommends mid-range twelve-by-twelve porcelain with a matte finish and epoxy grout, to balance cost, maintenance and slip resistance.

Why the other options are wrong:

• Large-format porcelain with minimal grout lines.: Large-format tiles require a very level subfloor in a small bathroom. The final recommendation is twelve-by-twelve matte porcelain.
• Special-order tiles in a custom colour.: Special-order colours are discussed as nonreturnable, but they are not the final tile recommendation.
• Low-cost ceramic tiles with a glossy finish.: Ceramic is described as less dense and not ideal for wet areas. The employee recommends matte porcelain instead.